What’s inside the highest-quality oil coolers? What should you look for, and what makes the difference between a legitimate heat exchanger and a waste of time and money?

Many products on the market purport to lower the fevers of notoriously hot engines, to varying degrees of success. Even “success” can be relative with some of these solutions — what if “success” means lowering temperatures at the expense of drastically slowing down the flow of oil back to your engine?

The right solution takes your whole system into consideration, giving you results that don’t force you to make trade-offs somewhere else.