Discuss Oil weight in 1993 Mustang GT? on AllFordMustangs.com, the place for Mustang enthusiasts.
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Ok im getting ready to change my oil in my 93 it has 107.xxx on it i have 3 brand new quarts of 15w-40 synthetic oil I think that might be a little heavy? can i mix that oil say with 10w-40 syntheic oil to make it lighter..?? I really want to use it being that it is so exspensive...or should i use all 15w-40 ...thanks....
DD 98 GMC suburban 04 Trailblazer,other toy 06 300 SRT8
Wifes toys, 91 Z28 350 tpi supercharged,89 Iroc-z 350 tpi.
1993 GT Convertible-SOLD
1998 GT SOLD 1990 GT sold
I think you would be safe either way. Using a thinner oil in winter really comes into play when you have extreme temps at startup. The oil gets thicker when its real cold making it harder for the pump to circulate on cold start ups.
Since Jersey gets fairly cold, I agree about using 10W40. There's lots here that swear by Royal Purple, you can't go wrong with it.
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