First of all, this site is wonderful. I just can't keep my eyes off from it.
Anyway, after seeing some UOA of LS1 engine with M1 5w-30, I thought I could try something thicker than M1 5w-30. Also, Patman has been telling people to go with thicker viscosity for LS1 engines. Over the Memorial Weekend, I changed oil w/ Motul Specific LL-01 5w-30.
According to Product Data Sheet , it is 100% Ester-based synthetic and specially formulated to meet BMW Long Life-01 requirement. The viscosity at 100C is 12 cst, which falls into high end range for 30 weight. Since it meets the BMW LL-01 requirements, its HTHS is greater than 3.5 like GC 0w30. I hope HTHS is high enough for LS1 engines. So far I haven't driven the car much, the oil pressure at idle seems to be higher. I have to see how this oil will do for the summer. I am still looking for a holy grail for my LS1 engine. Hopefully I will fine the one like Patman found the one (GC 0w30) for his LT1 engine
Anyway, after seeing some UOA of LS1 engine with M1 5w-30, I thought I could try something thicker than M1 5w-30. Also, Patman has been telling people to go with thicker viscosity for LS1 engines. Over the Memorial Weekend, I changed oil w/ Motul Specific LL-01 5w-30.
According to Product Data Sheet , it is 100% Ester-based synthetic and specially formulated to meet BMW Long Life-01 requirement. The viscosity at 100C is 12 cst, which falls into high end range for 30 weight. Since it meets the BMW LL-01 requirements, its HTHS is greater than 3.5 like GC 0w30. I hope HTHS is high enough for LS1 engines. So far I haven't driven the car much, the oil pressure at idle seems to be higher. I have to see how this oil will do for the summer. I am still looking for a holy grail for my LS1 engine. Hopefully I will fine the one like Patman found the one (GC 0w30) for his LT1 engine