GL-4 only Gear Oil choices

[matrophy]

The choices at my local NAPA for GL-4 gear only oil with explicit references to yellow metal safe-ness are now dwindled down to one which is the Sta-Lube 85W-90. I decided to go ahead and use that since I don't really get a lot of cold weather that gets much below freezing.

 

I asked the advice of a guy who works at a Nissan dealer who is able to find lots of parts for 720's still.

Riley at Lynchburg Nissan in Virginia  -  his email is vintage@lynchburgnissan.com. Check him out if you're looking for parts

 and he said that he had made up a list of GL-4 only choices and I attached it here. The list includes synthetics and apparently there is a school of thought that says synthetics don't work well so I'm personally sticking with non-synthetics. Technically, there were 2 choices at my local NAPA. They did have the Valvoline Syncromesh MTF 811095 but as I recall, the weight wasn't listed on the bottle nor is it listed in Valvoline's literature. If anyone knows if that is a viable option, I'd like to go forward with 2 choices.

GL4-only.pdf

[DIY 1985]

There is a 140w GL-4 at O'Reilley?

[Charlie69]

Here is an Amazon link for Sta-Lube 85/90W GL-4.

 

https://www.amazon.com/CRC-Sta-Lube-SL24239-Multi-Purpose-Hypoid/dp/B000M8RYMC/ref=sr_1_5?dchild=1&keywords=gl4+gear+oil&qid=1587304422&sr=8-5

[KELMO]

The link that Charlie posted is the NAPA brand. I have used this for ....Well, a very long time.

[Draker]

Same, use it all the time. Good stuff.

[pidge]

Used it in my 521. No shifting issues. Seems like good stuff. Pretty sure it was Charlie who helped me find it as well. 
-Pidge

[demo243]

Redline MT90 is yellow metal safe.