Postby Gray » Sat Apr 05, 2008 5:20 pm
I've been looking around for some engine flush options for awhile to keep varnish buildup to a minimum and reading the pro's and con's of various off the shelf products but was mainly seeing negative comments on most of those. I happened to read something about an old school mechanics trick of using ATF as a prechange engine oil flush, ie: pull out a quart of engine oil, put in a quart of AFT, idle the engine for about a 1/2 hour, and then drop the oil, so decided to give it a try. I usually check the engine oil fairly soon after an oil change and have been kind of disappointed with the PF VQ40 as the oil usually looks almost the same color as before changing even after a day or two use. I did the ATF recipe yesterday and pulled the dipstick today after doing about 200 miles and got a good surprise.
I've tried several different types of engine flushes in the past on other vehicles but with this one all I can say is WOW, looks cleaner than when I bought the truck...have others heard of this or used ATF as an engine flush. About the only problem I'm having now is I can't see the oil on the stick anymore because it's too clean, but now I'm thinking it works so good there might be some kind of a downside.
YMMV
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