Posted by ScottyHOMEy on May 27, 2008 at 13:10:05 from (70.105.254.77):
In Reply to: Farmall Oil question posted by charley123 on May 27, 2008 at 12:25:38:
I'm not a real big fan of additives to cure problems. That said . . . if it's just crud . . . I don't mind usin' them to dress things out.
If you're confident that your motor has been run and maintained reasonably and are just looking to clean out residual stuff . . . I don't mind at all usin' Seafoam.
I used it in a motor that was left out to the weather to get stuck with less than 500 hours after a good rebuild. Really not much sludge had any chance to accumulate. Bottom of the motor was good. Crank and all bearings were good and not wet, but I had to do new sleeves and pistons, and have the head redone. First change at five hours with straight 30W detergent was dark gold. Next change 25 hours later with Seafoam in fuel and crankcase had a good deal more black in it, but I could still see gold through it as it drained. Next change, another 25 hours with Seafoam in the crankcase only, I probably could have skipped, but I never object to changin' oil.
Detergent vs non-detergent 30W won't gain you a thing. Detergent oil has to do with it's ability to suspend stuff that breaks loose, not with actually dissolving or breaking it loose. That's what the additives do.
Before using something like Seafoam, or STP or anything else you might settle on, I'd STRONGLY suggest you pull your valve cover and brush down everything with diesel or kerosene to get rid of any sludge you can. Then drain your pan, drop it and get all the sludge out of there, too. That'll leave you with just the residual sludge in the galleries of the timing case, crankcase and crank, and the Seafoam won't break loose anything that your oil filter can't handle.
BUT it is a SOLVENT, with minor but acceptable lubricative properties when used as directed. I wouldn't recommend using it, especially in the crankcase oil, beyond a couple of oil changes.
If there's that much crud you should consider tearin' her down and hot-tankin' her.
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