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Old 01-08-2020, 08:24 PM   #41
454cid
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454cid is a jewel in the rough454cid is a jewel in the rough454cid is a jewel in the rough
 
Join Date: May 2019
Posts: 400
Default Re: Unknown engine noise when cold

Quote:
Originally Posted by toggenburg View Post
I also pour in a full quart of ATF in each oil change on all cars since the 1970's.
It won't hurt a thing, but it will clean up an engine, better and cheaper than Marvel Mystery oil, or Rislone products. Never had any engine opened up for any reason yet. That's on many engines and cumulative mileage easily of over 1M miles. It won't hurt your engine to keep ATF in the oil year round.
That's a lot of ATF for our engines.

...
2000 SL2 Automatic (back on the road) 17X,XXX miles.
1999 Chevy K3500

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