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oil and transmission recommendations


jackassllc

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As far as your transmission oil (assuming it is a standard) make sure you use API/GL4, don't use GL5. On my car (72 1200 4spd) i used the Sta Lube brand 85W90, sta lube part # SL24239 (Gallon) it was kinda spendy but what are you gonna do? Napa carries that brand in my neck of the woods. Engine oil I am using 20w50, but I don't know what is recommended for the 320 :(

 

My $.02

 

edit: man those guys are quick

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As far as trans oil, I've used GM Synchromesh in my L20B 4 speed. Pennzoil in the yellow bottle!

 

You can buy it in an 80w-90 and it is confirmed yellow metal safe. From what GM told me about it, it IS a GL4 safe fluid and the only thing that makes it different from a traditional GL-5 is the fact that it's yellow metal safe, since some 90's GM 5 speeds use brass synchro's.

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