1992 454 7.4 liter oil
Changing oil Read in book 10w-30 ce/sg was recommended but sea 30 could be used down to 40f Im thinking number 30 is better for hot summer driving and being class A things get pretty dam hot under t...
Forum Discussion
What Hank says makes a lot of sense, but if you choose a higher multi viscosity oil say 10-40 or 10-50 over 10-30 wouldn't the higher engine temps dictate the viscosity? Also on these older well worn 454's that some of us have benefit from these higher multi viscosity oils? I saw no difference in engine temps when I switched from regular oil to syn oil.
