What weight and brand of gear oil should I use in my brats? Ones an 80 GL brat and the other an 82 DL brat.

one good choice has been

Redline 75-90 NS I have it in a couple of my cars (87 5 spped, 86 Brat) and the shifting very nice.

I got mine on line from Summit Racing. I have not seen it available on shelves anywhere.

i use castrol GTX 80w90 in both my cars and they seem to like it...

 

when i brought my XT home, it was a battle to get it in gear with the synthetic gear lube that was in it. 2K miles later its smooth shifting with the GTX

yeah was kinda wonderin myself what i should put in this dr-4speed... all spiffy lube had was 90W. after they changed it, it started grindin in 3rd.. :/ but i had to get it changed when i did since it had water in it

 

i know my turbo wagon has 80W90 in it and it won't speed shift into 2nd..

 

guess i'll try just about anything lol, gotta be better than whats in it...