Originally Posted by lowon
Originally Posted by Snagglefoot
Here are the specs for Mobil 1 15w50 which Chevrolet recommends for the C-7 ZR-1 Corvette.
Too thick, I do not want to risk excessive bearing wear.
Originally Posted by Vladiator
Daily Driving - 0W40/5W40 year round. With track days - 15W50. Mobil 1 15W50 has a pour point of -38F and flash point of 450F. HTHS 4.5.
LL-01 is just a robust oil for long intervals. With track days long intervals are a bad idea. So I'd give up the long intervals with LL-01 and concentrate on the robust part. In this case 15w50 will be a lot more robust as compared to 0w40.
Too thick, I can link you guys the bearing clearances on BMW TIS, but they are tight. BMW is notorious for doing this hence huge failures on the E9X m3, so I would prefer to stay at a 40 weight a t max.
10w60 Is a bit thick, I agree. It definitely contributed to a lot of bearing failures. But Mobil1 15w50 is MUCH closer in properties to a 40wt than a 60wt. Many even claim that Mobil1 15w50 flows better at 0F than a Mobil Super 5w30 conventional. I have yet to SEE proof, but I believe it so far after using that oil myself and seeing VOAs and UOAs posted here.
Originally Posted by Snagglefoot
Here are the specs for Mobil 1 15w50 which Chevrolet recommends for the C-7 ZR-1 Corvette.
Too thick, I do not want to risk excessive bearing wear.
Originally Posted by Vladiator
Daily Driving - 0W40/5W40 year round. With track days - 15W50. Mobil 1 15W50 has a pour point of -38F and flash point of 450F. HTHS 4.5.
LL-01 is just a robust oil for long intervals. With track days long intervals are a bad idea. So I'd give up the long intervals with LL-01 and concentrate on the robust part. In this case 15w50 will be a lot more robust as compared to 0w40.
Too thick, I can link you guys the bearing clearances on BMW TIS, but they are tight. BMW is notorious for doing this hence huge failures on the E9X m3, so I would prefer to stay at a 40 weight a t max.
10w60 Is a bit thick, I agree. It definitely contributed to a lot of bearing failures. But Mobil1 15w50 is MUCH closer in properties to a 40wt than a 60wt. Many even claim that Mobil1 15w50 flows better at 0F than a Mobil Super 5w30 conventional. I have yet to SEE proof, but I believe it so far after using that oil myself and seeing VOAs and UOAs posted here.