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Joined: Apr 2020
Posts: 7
Grease Monkey
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Grease Monkey
Joined: Apr 2020
Posts: 7 |
good morning,i removed my transmission in my 1946 gmc 1/2 ton that I just bought a month ago to replace the flywheel ring gear,want to change the trans and rear end oil,its a 3 speed trans and 4.11 rears,i,m hearing 90wt mineral oil for trans and 90 wt multi purpose gear for the rear,is this what everyone recommends ?
william a gove
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Joined: Oct 2009
Posts: 1,294
ChatMaster - 1,000
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ChatMaster - 1,000
Joined: Oct 2009
Posts: 1,294 |
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Joined: Apr 2020
Posts: 7
Grease Monkey
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OP
Grease Monkey
Joined: Apr 2020
Posts: 7 |
thank you,would synthetic be be better ?
william a gove
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Joined: Sep 2009
Posts: 6,689 Likes: 21
ChatMaster - 6,000
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ChatMaster - 6,000
Joined: Sep 2009
Posts: 6,689 Likes: 21 |
No but it will cost more. It may provide you with a sense of well being but the transmission and differential could care less if it's synthetic or not. They got no money. Best, Charlie 
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Joined: Nov 2002
Posts: 7,472 Likes: 26
ChatMaster - 7,000
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ChatMaster - 7,000
Joined: Nov 2002
Posts: 7,472 Likes: 26 |
While the synthetic oil does have some benefits over conventional oils you most likely will never put on enough miles on the 46 to notice any.
Steve D
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
Gene Schneider
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Joined: Jan 2002
Posts: 1,069 Likes: 9
ChatMaster - 1,000
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ChatMaster - 1,000
Joined: Jan 2002
Posts: 1,069 Likes: 9 |
Make sure it says it is ok for yellow metal. Brass synchro's.
1946 Chevy 3100 1/2 Ton Pickup Purchased 11/18/17 Sold 9/20
1948 Chevy Fleetmaster Coupe, Purchased 6/20/2010
1965 Chevy ll 350 Purchased Feb 2021. 3-speed Saginaw Hurst Floor Shifter 3.08 Rear End
2019 Ford Ranger Lariat Super Crew
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