My Ryobi riding mower RM480EX requires GL4 80w90 but I can't seem to find it anywhere. Many of the name brands (Valvoline and Pennzoil) have 80w-90 but they seem to be all GL5. Some of the brands I'm not familiar with like VP Classic says GL4 but I'd like to stick with a known name like Pennzoil. And I only need about 8.5 oz. so I'm not interested in buying 3 gallons. Where could I buy GL4 80w-90?
Ryobi Riding Mower Takes GL4 80w90 But Can't Find It
- Thread starter rob1715
- Start date
Here is one I wouldn't hesitate to use
Driven GL-4 80W-90
https://www.summitracing.com/parts/JGR-04530
Driven GL-4 80W-90
https://www.summitracing.com/parts/JGR-04530
Amazon sells Redline GL-4 gear oils.
A lot of the name brand ones are GL-5 but say they're fine for bronze/brass right on the bottle. For a mower I wouldn't hesitate to use them.
Amzoil and Redline both make a suitable oil.
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- Nov 27, 2023
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*Edit* Disregard; missed that it being GL4 vs. GL5 was the issue.