Oil advice and recommendations here - Page 23 - Saxperience

oilman · 6th December 2008, 16:37

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!

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

oilman · 6th December 2008, 16:39

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

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

kakaben · 6th December 2008, 21:02

saxo 1.1i x 1998
mods-induction kit
type of use road and a bit of track

recommendations for engine oil

oilman · 7th December 2008, 18:32

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

vlatko_vts · 25th December 2008, 03:39

Saxo VTS 1997

Grp.A High Comp forged pistons
Newman cams Ph3

Thanks

Simon^p · 26th December 2008, 15:14

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

IH8CAMERAS · 27th December 2008, 20:21

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

oilman · 28th December 2008, 19:59

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

Simon^p · 28th December 2008, 21:23

Thanks

Order placed for Motul 8100 Xcess 5w-40

Aaron · 28th December 2008, 21:37

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

vlatko_vts · 29th December 2008, 02:38

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

Thanks Mate

oilman · 29th December 2008, 08:41

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

Yep, stick with 5w-40

Pro s is ideal.

Cheers

Guy

Toad · 30th December 2008, 11:01

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.

oilman · 30th December 2008, 16:07

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

Toad · 31st December 2008, 08:28

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?

oilman · 31st December 2008, 09:15

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

Toad · 31st December 2008, 10:06

Excellent, thanks Guy.

oilman · 5th January 2009, 22:17

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

richt247 · 7th January 2009, 23:58

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

oilman · 8th January 2009, 00:05

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

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