Been through several threads under the search, not too satisfied with results.
Anywho... is it safe to use 75w90 in place of 80w90? I read up about lots of people with complaints of a "whining" differential with the synthetics. My truck says 80w90, wouldn't mind having a synthetic in there, but I want nothing to do with it if there is a risk of a whining differential.
I just want to sort through all the heresy!
Thanks
Anywho... is it safe to use 75w90 in place of 80w90? I read up about lots of people with complaints of a "whining" differential with the synthetics. My truck says 80w90, wouldn't mind having a synthetic in there, but I want nothing to do with it if there is a risk of a whining differential.
I just want to sort through all the heresy!
Thanks