수리 사례

2026. 6. 30. 작업

증상

Is it worth switching to full synthetic or blend oil in my older car/truck?

처리 내용

Check with your dealer or manufacturer to see if synthetic is usable in your car first of all. For example, RX-7s have traditionally recommended against synthetic because they inject some oil into the combustion chamber and synthetic oils don't work as well for sealing the "apex seals" in this application. Beyond that, there is also a theory that synthetic oils may break down sludge and varnish which is sealing what would otherwise be leaks. So switching to a synthetic may cause a car that has no leaks to start leaking. I've never had that happen or known that to happen, but they do promote reducing sludge and varnish as a feature of synthetics. However, if you have a turbocharged car, I'd use synthetic in it in any case. Turbochargers run at extremely high temperatures and are lubricated and cooled by oil. Synthetics react better to extremely high temperatures, so they are particularly useful in turbo applications. That said, I've had some mixed results with Synthetics that make me qu