i use 10w-40 GTX magnitec, but i did use 15w-40 between 70-85k. Shes sitting pretty wiv 108.5k on the clock now. She used to have a 106 rallye box in her witch ment at 60mph the revs were rather high!! also has a full exhaust no cat & an air filter, and i change the oil&filter as often as possible.... Hell i even replace things sumtimes that dont really need it, but its all relivant.
recomended oil i guess is a 5w-40 but i always let her warm up before i drive her anyway so is there much difference? 10% of engine wear occuring in the first 10-15 mins but shes stood still anyways!!
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throttle bodies are best we all know it....
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