Engine Oil Specifications

Clarkie · Post by **Clarkie** » Tue Jun 05, 2007 7:02 pm

Standard spec for Elise is 5W-40 fully synthetic. Are there any pros/cons to using 15W-50 Mobil 1?

Can't remember how the ratings go to make informed decision!

Stu160 · Post by **Stu160** » Tue Jun 05, 2007 10:51 pm

If you are going to track the car ,the 15w 50 mobil 1 is better.Nothing wrong with the 5w 40,its used to return better fuel consumption ,worth .1mpg more

Stu

l1_cwb · Post by **l1_cwb** » Wed Jun 13, 2007 4:30 pm

The rating is fairly simple to understand Clarkie.

The number b4 the W is the cold viscosity. That means the lower the number the more it'll protect your engine while it warms up.

The number after the W refers to the hot viscosity. The higher the number here the more the oil will protect and lubricate at high temperature (such as fast road or track use).

Don't worry too much about the make of oil, as long as its a reputable brand. (thats my opinion anyway)

HTH