oil question help?

[edie70rhs]

My 2000GT now has 75000 miles on it, should i encrease the weight of the oil to 10-40 or keep the manufactures weight? thanks

 

[tjbrowder]

Keep using the weight the manufacturer recommends...if you are having usage issues, try an oil formulated for higher miles (has additives that help boost your seals).

10W40 is not a great viscosity to go with...it shears down too quickly because of its wide viscosity range.