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Old 05-27-2021, 10:18 AM   #23
Bob Bidonde
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Join Date: May 2010
Location: Long Island, NY
Posts: 3,472
Default Re: Slight Grinding when shifting - transmission oil Aerated

I have had the aeration problem in a newly rebuilt transmission using the so called 600W oil. Anything with a 600W label on it cannot be trusted. SAE 75W140 Gear oil is the way to go for the Model A's transmission and differential.
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