Saxo Engine/Performance If you're interested in tuning Saxo engines, or if you need to know something which is engine related... this is the place for you. |
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6th December 2008, 16:37
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#441
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Established Member
Join Date: Feb 2005
Location: Truro United Kingdom (England)
Posts: 1,229
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Quote:
Originally Posted by Woods
1997 Saxo - 1.1i 8v
about 80,000miles
mainly used for short journeys, but gets thrashed sometimes. completely standard engine and exhaust etc.
Just filled with 15w/40 Castrol GTX and new oil filter.
Should i be using a lower grade like 5w/40?
cheers in advance!
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This time of year, when it's cold the 5w-40 has big benefits over the 15w-40 as it circulated much more quickly from cold meaning less engine wear.
http://www.opieoils.co.uk/c-656-5w-40.aspx
Cheers
Guy
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6th December 2008, 16:39
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#442
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Established Member
Join Date: Feb 2005
Location: Truro United Kingdom (England)
Posts: 1,229
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Quote:
Originally Posted by Psycho18
i have a problem with my gears being stiff on a cold morning and going fine once the car has warmed up. Any ideas on a top quality gearbox oil and preferably one that will warm up the quickest? thanks pal
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Probably could do with a thinner one for those cold mornings.
http://www.opieoils.co.uk/c-670-75w-80-75w-85-mtfs.aspx
Try the Fuchs Sintofluid 75w-80
Cheers
Guy
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6th December 2008, 21:02
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#443
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L-plater
Join Date: Oct 2008
Location: brinsley (notts)
Posts: 41
Car(s): saxo 1.1i x 98
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saxo 1.1i x 1998
mods-induction kit
type of use road and a bit of track
recommendations for engine oil
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7th December 2008, 18:32
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#444
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Established Member
Join Date: Feb 2005
Location: Truro United Kingdom (England)
Posts: 1,229
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Hi,
If you track the car its worth going for a good synthetic 5w-40, these dont have to cost a lot either.
Have a look at the likes of the Fuchs Titan Supersyn 5w-40 or the Motul 8100 Xcess 5w-40 here http://www.opieoils.co.uk/c-656-5w-40.aspx
Cheers
Guy
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25th December 2008, 03:39
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#445
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Infrequent Poster
Join Date: Jul 2006
Location: Skopje
Posts: 215
Car(s): Citroen Saxo 1.6-16V VTS
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Saxo VTS 1997
Grp.A High Comp forged pistons
Newman cams Ph3
Thanks
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26th December 2008, 15:14
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#446
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Super Moderator
Join Date: Aug 2006
Location: Staffs
Posts: 3,778
Car(s): 207 HDi GT
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Engine oil for
Make : Citroen Saxo
Model : VTR
Year : 2003
Engine size/type : 1600 8v
Any mods : Exhaust & air filter
Type of use : Mainly used for short journeys, but gets thrashed sometimes
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27th December 2008, 20:21
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#447
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Infrequent Poster
Join Date: Jul 2008
Location: Leicester
Posts: 190
Car(s): Saxo VTR
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Engine oil for
Make : Citroen Saxo
Model : VTR
Year : 2002
Engine size/type : 1600 8v
Any mods : Exhaust & air filter
Type of use : Mainly used for short journeys, very rarely gets thrashed
Car was recently in an accident and has leaked oil, need to top her up and need advice
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28th December 2008, 19:59
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#448
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Established Member
Join Date: Feb 2005
Location: Truro United Kingdom (England)
Posts: 1,229
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IH8CAMERAS, Simon, vlatko_vts
You can all use a good 5w-40 synthetic.
Brand wise, look at something like the Motul 8100 Xcess 5w-40 or the Fuchs Titan Supersyn. If you want the best then look to the ester based synthetics such as the Silkolene Pro S or the Motul 300v.
Have a look here http://www.opieoils.co.uk/c-656-5w-40.aspx
Cheers
Guy
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The Following 2 Users Say Thank You to oilman For This Useful Post:
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28th December 2008, 21:23
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#449
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Super Moderator
Join Date: Aug 2006
Location: Staffs
Posts: 3,778
Car(s): 207 HDi GT
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Thanks
Order placed for Motul 8100 Xcess 5w-40
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28th December 2008, 21:37
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#450
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Saxperience Post Whore
Join Date: Jan 2008
Location: .....
Posts: 5,231
Car(s): ..............
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Make : Citroen Saxo
Model : VTS
Year : 2000
Engine size/type : 1600 16v
Any mods : Exhaust.
Type of use : Some early mornings(cold starts)
daily driving.
and sometimes highly reved.
stick with the 5w 40 sythentic?
any recommendations on make though?
sikolene pro s in my opinion
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29th December 2008, 02:38
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#451
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Infrequent Poster
Join Date: Jul 2006
Location: Skopje
Posts: 215
Car(s): Citroen Saxo 1.6-16V VTS
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Quote:
Originally Posted by oilman
IH8CAMERAS, Simon, vlatko_vts
You can all use a good 5w-40 synthetic.
Brand wise, look at something like the Motul 8100 Xcess 5w-40 or the Fuchs Titan Supersyn. If you want the best then look to the ester based synthetics such as the Silkolene Pro S or the Motul 300v.
Have a look here http://www.opieoils.co.uk/c-656-5w-40.aspx
Cheers
Guy
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Thanks Mate
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29th December 2008, 08:41
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#452
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Established Member
Join Date: Feb 2005
Location: Truro United Kingdom (England)
Posts: 1,229
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Quote:
Originally Posted by aterro
Make : Citroen Saxo
Model : VTS
Year : 2000
Engine size/type : 1600 16v
Any mods : Exhaust.
Type of use : Some early mornings(cold starts)
daily driving.
and sometimes highly reved.
stick with the 5w 40 sythentic?
any recommendations on make though?
sikolene pro s in my opinion
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Yep, stick with 5w-40
Pro s is ideal.
Cheers
Guy
__________________
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email: sales@opieoils.co.uk
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30th December 2008, 11:01
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#453
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Saxperience Post Whore
Join Date: Mar 2007
Location: Reading
Posts: 8,980
Car(s): French tin can
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Bit of a tricky one for you oilman!
Are you able to tell us what the perfect oil temp is for maximum protection, and how this coincides with maximum performance oil temp? If that's not too tricky, can you tell us where abouts the danger levels begin to occur, in both extremes of hot and cold. Let's consider we're using a fully synthetic, 5w40 oil, with the 16v 106gti / Saxo VTS engine.
__________________
Quote:
Originally Posted by FinchysSaxo
Some say hes the biggest drug dealer in Toadville!
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Quote:
Originally Posted by sax-oli
and that his dealings even stretch as far as Brazil!
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Quote:
Originally Posted by Colin
All we know is that he's called the Toad!
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30th December 2008, 16:07
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#454
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Established Member
Join Date: Feb 2005
Location: Truro United Kingdom (England)
Posts: 1,229
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When thinking about a Saxo running a very good 5w-40 synthetic oil (something like Pro S 5w-40), the oil will be providing very good protection between about 60C and 130C. If it was a lower quality oil, it would break down around 115C. The top of the range oils from Motul, Silkolene and Redline have an ester content. The ester content allows the oil to be more stable at higher temperatures which is why they are fine at 130C.
Synthetics are better at dealing with the higher temperatures because they were made for the purpose and mineral/semi-synthetic oils are modified to do the job. When mineral oils are taken from the ground, they are a mixture of molecules that are all different shapes and sizes. When you heat mineral oil, the smaller molecules which are more volatile basically evaporate off and get burnt. The problem is much less in synthetic oils because all the molecules are uniform so there are no smaller ones to volatise. Mineral oils also have more additives and many of them are broken down by higher temperatures.
If your oil temp is over 120C a lot of the time, you may need to go to a thicker grade oil, but something like a 10w-50 or 15w-50 instead of a 20w-50. If you think you need something thicker, but also want good cold start protection don't bother with a 5w-50 as they contain a lot of polymers to cover the viscosity gap from 5w to 50 and the polymers break down quickly so you end up with a 5w-40.
We recommend synthetic oils when the cars are driven hard for the reasons above. If you use mineral oil on a track, the breakdown of the oil, the volatisation and burning, and because mineral oils don't last as long anyway, it often means that you need to change oil at least after every track day or the engine wear can be pretty bad.
At lower temperatures oils are thicker (when people see 5w-40 they often think it is thicker when hot as it's a bigger number, but the cold and hot viscosities are measured on different scales) and as it is thicker, it won't flow around the system as well. Some companies recommend a 20w-50 oil for anything that is modified, but that is roughly 4 times as thick as a 0w-40 at 0C. That means it takes 4 times as long to get around the engine so that's a lot more time for damage to occur. Ester based oils are good for that as the ester content means that the oil sticks to the inside of the engine so there is always some there when the engine is started and the cold start wear is reduced even further.
Oil temps can be a pretty large subject so if I have missed anything, you may want to have a look at our technical articles here
http://www.opieoils.co.uk/technicalinfo.aspx
Articles to do with shear stability, synthetic oils and viscosity may answer what you need if I've missed it.
Cheers
Tim
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31st December 2008, 08:28
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#455
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Saxperience Post Whore
Join Date: Mar 2007
Location: Reading
Posts: 8,980
Car(s): French tin can
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That's great info, thanks very much.
I wasn't aware that the temp band for protection was so vast - 60 to 130 degrees C. As the oil viscosity obviously becomes thinner at higher temperatures, this means the engine's internals will move more freely, which in turn will increase performance. If the likes of Silkolene's Pro S 5w40 provides protection up to 130C, would it be fair to say that for optimum performace, you would want the engine oil running around 110 - 120C?
__________________
Quote:
Originally Posted by FinchysSaxo
Some say hes the biggest drug dealer in Toadville!
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Quote:
Originally Posted by sax-oli
and that his dealings even stretch as far as Brazil!
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Quote:
Originally Posted by Colin
All we know is that he's called the Toad!
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31st December 2008, 09:15
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#456
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Established Member
Join Date: Feb 2005
Location: Truro United Kingdom (England)
Posts: 1,229
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Only the best ester based SAE40's can take 130deg for prolonged periods, because they are shear stable even though they thin with temp they keep their film strenght, protection ond dont over thin. A lower quality SAE40 such as halfords own will be having real problems at 130deg and will be shearing down (over thinning if you like) at those temsp.
Running at around 100degc is optimum.
Cheers
Guy
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31st December 2008, 10:06
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#457
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Saxperience Post Whore
Join Date: Mar 2007
Location: Reading
Posts: 8,980
Car(s): French tin can
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Excellent, thanks Guy.
__________________
Quote:
Originally Posted by FinchysSaxo
Some say hes the biggest drug dealer in Toadville!
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Quote:
Originally Posted by sax-oli
and that his dealings even stretch as far as Brazil!
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Quote:
Originally Posted by Colin
All we know is that he's called the Toad!
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5th January 2009, 22:17
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#458
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Established Member
Join Date: Feb 2005
Location: Truro United Kingdom (England)
Posts: 1,229
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Any advice on oil required, please feel free to ask as I can help you
You will also find some useful info on my website here
http://www.opieoils.co.uk/oil-and-fi...k-citroen.aspx
All the best for 2009
Cheers
Guy
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7th January 2009, 23:58
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#459
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Frequent Poster
Join Date: Jun 2008
Location: South Shields
Posts: 808
Car(s): Mk 4 GSI
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Make : Citroen Saxo
Model : VTS
Year : 2002
Engine size/type : 1600 16v
Any mods : Exhaust, Filter, Cams ( 150bhp )
Type of use : Weekend driving and trackdays... Mainly Driven hard.
Doing a full service in the next few weeks and im going to change both gearbox and engine oil.... and have no clue which to buy.
Thanks
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I May Grow Old... But Ill Never Grow Up !
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8th January 2009, 00:05
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#460
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Established Member
Join Date: Feb 2005
Location: Truro United Kingdom (England)
Posts: 1,229
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Quote:
Originally Posted by richt247
Make : Citroen Saxo
Model : VTS
Year : 2002
Engine size/type : 1600 16v
Any mods : Exhaust, Filter, Cams ( 150bhp )
Type of use : Weekend driving and trackdays... Mainly Driven hard.
Doing a full service in the next few weeks and im going to change both gearbox and engine oil.... and have no clue which to buy.
Thanks
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Hi
Take a look here and go with the "upgrade engine oils" and the more expensive gear oils.
http://www.opieoils.co.uk/c-861-car-engine-oils.aspx
Cheers
Guy
__________________
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email: sales@opieoils.co.uk
phone: 01209 202944
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