Engine Longevity

After its first great wave of turbo boosting from the late Seventies and into the Eighties, the factory turbocharger has returned to extract big power out of small displacement engines. Oil temperature control is back into the engine survival playbook. Cold start protection comes by way temperature bypass valves with thermostat control but red hot turbocharger housings can put enormous demands on motor oil. A larger capacity oil cooler can mean the difference between ongoing turbocharged motoring entertainment and a connecting rod poking through the side of the block after some unwelcome rod knock.





Factory issue oil cooler survivor from the first great wave of production turbocharging in a tight spot perfect for an auxiliary fan assist oil cooler upgrade.

Transmission Survival

Excess heat is not only the enemy of motor oil and engine parts but is also a known killer of transmissions. Sending more power through a transmission can overtax the gnashing gears, cogs and clutches inside the transmission case. Towing is another source of transmission stress and factory-issue tow packages include a larger capacity oil cooler as part of the deal. Automatic transmission fluid is oil of a different stripe. Even something as simple as a larger diameter wheel and tire combo are four good reasons to step up with a larger capacity transmission oil cooler.





Transmission coolers with auxiliary fans are ideal for tight locations with restricted airflow.

Differentials in Line

Sending more power down to the ground can create destructive heat inside differentials. Peer into a Sixties-vintage hemi-powered NASCAR super speedway car and there will likely be a massive oil cooler dedicated to the preservation of ring, pinion and rear axle for hours of punishment at 200-plus miles per hour. In modern times excess heat can also trigger modern built-in electronic safety measures. Development testing of the in-house Mishmoto Ford Focus RS saw heat buildup in the rear differential cause the computer to back down on output and rear wheel vectoring. Keeping the rear end gear oil cool not only helps the differential live but can help you live it up.



Heat is the enemy of differential gear oil in the from '60s-vintage stock cars to the rear differential in the AWD Mishimoto Ford Focus RS.