The Post Ninja

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Joined 1 year ago
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Cake day: July 8th, 2023

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  • That information is also wrong. Your oil should be changed when it needs it. Almost every car I owned cooked the oil by 4000 miles… and only the Corolla could stretch to 7000. Full synthetic on every vehicle. Frequent oil changes only hurt your wallet, not the engine.

    This is even more important on GDI and forced induction engines (my last two), which cook the oil faster due to the higher compression and temperatures the engines run at. When the oil is cooked, the additive package is broken down and the oil doesn’t do the cool stuff (cleaning the engine, thickening when hot so it still lubricates) that keeps the engine happy. Also sludge.

    For GDI, you need to regularly (before 12,000 miles) clean the intake valves, since the fuel systen does not. That’ll hurt the engine more.