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Old 08-07-2009, 01:09 PM   #71
Lil bastard
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Quote:
Originally Posted by mptoledo
LiL bastard, would you suggest doing it with your old oil, rather than wasting the new. Or does it have to be done with new oil. And would you use atf over seafoam?

I'm not suggesting anything. I am simply passing along a tried and tested method for others to be aware of and to use if they believe it has merit.

Personally did this twice before, once with a GM smallblock and once with a miata motor. In both cases I used ATF and in both cases it cleaned/quieted the lifters for at least another 20k mi. (as long as I owned or had contact with the cars afterward).

I will use ATF over an additive because I have had sucess using it in the past.

It's critical to start with fresh oil for a couple reasons. Used oil will contain moisture, fuel, and acidic compounds which can breakdown or dilute the additive (or chemicals in ATF) minimizing their effectiveness. Second, used oil is already 'saturated' to some degree and has a lesser ability to hold additional crap in suspension.

I'd say that if you're not going to do it as described, it's probably best not to do it at all.

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