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> Gear oil 75W-90 - Synthetic or Not?
surfdogskier
post Dec 1 2020, 08:46 AM
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Hey guys, my ride has started having issues going into gears cleanly. I hope it is just the gear oil. I have never changed it since finally getting her running so I expect it to be quite old. I got it all drained.

My question. Should I use synthetic or not. Back 15 years ago on posts, it read don't use but then I find others saying they are. I figured synthetics have gotten a lot better since then. I bought synthetic but having my doubts until I here some recent opinions.

I purchased Synthetic 75W-90 GL-5 Gear Oil. 3 quarts.
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Mark Henry
post Dec 2 2020, 11:23 AM
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This is close to 20 years ago but I did have OK luck with Kendall semi-synthetic.
I prefer Kendall but any cheap dino will do.
The only thing I liked about swepco was the pretty blue dye made it easy to spot a trans leak. IMHO it made shifting worse, but I still like the 101 grease.
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