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Originally Posted by cj2112
well the car talk guys have this to say:
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I'd say it's probably not really gonna do much for your engine, but i don't think it'll do any damage either. |
Yes, going 5000-7500 on an oil change is an excellent idea. You will become intimately acquainted with oil sludge and the damage it causes. If you change the oil, start the car until the oil pressure warning light goes out, and the oil on the dipstick is not the same color as the oil that came out of the can/bottle, you have sludge buildup. We do motor flushes on cars all the time at work when they're thousands of miles overdue for an oil change, and I can both see and hear the difference in the engines before and after.
I wouldn't use a heated solvent in a pressurized system, what we use at work (it seems to be pretty good,) is a gallon jug of cleaning solution (kerosens-based, I think,) that we pour in after draining the oil and changing the filter, run it for ten minutes with the engine hot, then drain it and change the filter again. The stuff goes in clear and comes out in a range of colors from light brown to as dark as used oil.
Unless you're doing a rebuild, hooking up any thing pressurized to the engine anywhere other than the intake* is a bad idea. A quick lube place (where I now work, ironically enough,) blew the engine on my mom's car with a pressurized injector cleaning system.
* - only use filtered, compressed air and/or cleaning solvents intended for intake/throttle body/manifold usage