AC Engine Oil Additives

Is it OK to put Diesel oil in my gas engine? When is diesel oil bad for my car? Do I need to any additives in addition to diesel oil in my gas engine?

Classic cars ran on normal motor oils for decades, so why change now? The answer lies in the evolution of gasoline engines and how motor oil has co-evolved.

Build a high-performance Gen V LT engine with proven power combos and learn about LT upgrades and tuning tips for maximum power

Overheating is a major cause of DNFs and damaged engines. We'll go beyond the cooling system for solutions to your overheating issues.

How does ZDDP or zinc help my engine live longer, what does ZDDP do and why is it important to use ZDDP oil in my engine?

Do I need break-in oil for my engine and why. When should I not use an engine break-in oil? What do I look for when choosing a break-in oil?

Whether you're trying to troubleshoot engine issues or want to get an idea what's going on inside that junkyard jewel that you just hauled home, a leak down test is a great way to ascertain the condition of an engine's cylinders without pulling it apart.

While everyone is looking for a 6.0 LS, don’t count out the original 5.7 LS1 engine for your next LS swap performance build

The small block Chevy is still a great option for your muscle car, hot rod, or classic truck, just follow our build lists

The process on how to effectively winterize your fuel system in open wheel racing. This includes step by step instructions and recommended parts to use for your fuel system.