Re: Additives: what works what doesn't?
Those engine flushes are SCARY. I don't know why they are even sold in the first place.
1) Why would you want to water down your oil that thin and run the motor ? Can you say major engine damage ?
2) If you loosen up sludge, it's going to go right to the oil pickup screen and clog it. Guaranteed. If you have a motor with a little sludge in it, keep using the exact same oil you are using and don't loosen any of it up.
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