Interested to know if there are any real world performance differences between something like Mobil 1 75w90 or Delvac 75w90... Or Pennzoil vs Shell Spirax, for example.
It seems one difference is most of the consumer market stuff contains LS additives, whereas the commercial stuff doesn't. Also a lot of the consumer grades are GL4 friendly. I would imagine the commercial stuff is meant more for low speed, very heavy loads? Is it bad to use them in a higher speed application?
It seems one difference is most of the consumer market stuff contains LS additives, whereas the commercial stuff doesn't. Also a lot of the consumer grades are GL4 friendly. I would imagine the commercial stuff is meant more for low speed, very heavy loads? Is it bad to use them in a higher speed application?