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Old 08-11-2013, 01:15 AM   #1
Classicman
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Transmission oil

Hey guys, I am thinking to change the transmission oil, but I don't know what is the right transmission oil for TH400 on my Chevy 1972. somebody can tell me what oil is right to use in TH 400 AT.

Thanks
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Old 08-11-2013, 03:39 AM   #2
eightbanger
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Re: Transmission oil

Dexron III...that's all you'll need, although some would recommend Type F, just don't use B&M Trick Shift....I recently did a fluid change on mine and all they had at the store was B&M Trick Shift, well I can tell ya i'm not happy with the performance of my 400 on that stuff so I need to drain it again and get back to my Dex III.
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Old 08-11-2013, 11:06 AM   #3
BlackedOut67shorty
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Re: Transmission oil

I would just use dextron III, using type F would burn a transmission up. Some people were lucky and says it mak3es the shifts firmer but id rather make the transmission built to shift harder rather than the fluid doing so.
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Old 08-11-2013, 11:11 AM   #4
BlackedOut67shorty
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Re: Transmission oil

danget!!
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1993 s10 blazer 4.3l 4l60 RIP 6/20/14
2000 mercury sable
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Last edited by BlackedOut67shorty; 08-11-2013 at 11:12 AM. Reason: double post
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