GM truck loyalists are lining up behind an old-school idea for the next small block […] ...
GM Authority poll shows owners overwhelmingly want thicker 5W-30 or 0W-40 oil for next-gen V8s, citing durability over thin 0W-20 fuel economy gains.
API PC-12 engine oil categories CL-4 and FB-4 are advancing toward a 2027 launch. Here’s what the changes mean for fleets, ...