sm465 fluid?

[BowtieBlazer]

What do you guys out there with the 465 run in your tranny?

I was told to go with the sludge 85-140w

1985 GMC C-10 Shortbed
1984 Chevy K-5 Blazer
1982 Chevy C-10 Longbed

 

[thatK30guy]

85-140 is fine.

The more common oil is the 80-90 weight oil, which I use.

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[Pugsley]

I put 85W140 in mine in the dually - I like good heavy oil

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[tRustyK5]

It might help to mention that if your truck sees any cold weather at all 80 W 90 might be a better choice.

Rene

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[BowtieBlazer]

South Louisiana....it gets below freezing about a week out of the year and thats not consecutively

1985 GMC C-10 Shortbed
1984 Chevy K-5 Blazer
1982 Chevy C-10 Longbed

 

[simpleman83]

I just changed my clutch and I'm going to replace the fluids too. Can I use the 85W140 in the NP208 also? Or should I use something else? I'm in GA so, probably don't need the lightweight stuff either...

 

[cegusman]

trans fluid in the 208

 

[simpleman83]

Why not just use trans fluid in both then? I assume Dextron/Mercon III or whatever....

 

[Chevy305]

the sm465 is purly metal on metal gears and was designed in the 60s so gear oil is what it calls for. The 208 is an 80s design with gas milage considered thats why its designed to be used with the much lighter weight ATF.