Old Ferris 20w20 hydro oil

[Warlord]

I picked up an old Ferris walk behind mower that has been sitting for years and years. Got it running and driving in no time. It even mows well. I want to change out the hydraulic oil but it says to only use 20w20 motor oil and I can’t find any info about a modern substitute. I can’t find either 20w20 or SAE 20 so maybe SAE 30 would be the next best thing? What would you use?

 

[Jackson_Slugger]

https://www.mystiklubes.com/Product.do?code=663112002&category=AGRICULTURE

Note the above is non-detergent...

PSC says that Mobil Delvac 1220 is equivalent to 20W-20...

Products

Mobil Delvac 1220, 1230, 1240, and 1250 are heavy duty, diesel engine oils formulated from high performancebase oils and a balanced additive system of ashless dispersants, metallic detergents, and inhibitors to control oxidation, wear, corrosion, and rust. They are used in a wide range of...

www.mobil.com

 

[jeepman3071]

If it was mine I would run SAE 30.

 

[JavierH19]

im sure the supertech hydraulic oil will be just fine. hydraulic oils are rarely thicker than a 20 grade. nd 30 will probably be ok as well.

 

[Warlord]

Thanks all. I’ll probably try straight 30 first. All it does is go forward and back. Steering is done with a hand brake on each side.

 

[blufeb95]

ISO 68 or 5W30\10W30 is probably closer.

 

[blufeb95]

https://www.canadiantire.ca/en/pdp/certified-aw68-anti-wear-hydraulic-oil-18-9-l-0280214p.html

This would probably be the closest thing?

 

[ripcord]

My Ransomes Bobcat, which I'm sure has a very similar hydrostat system, calls for 10w30. I changed it a few years ago after probably a decade of use and it still looked really good. I probably didn't need to change it.

 

[MParr]

SAE 30

 

[Warlord]

https://www.canadiantire.ca/en/pdp/certified-aw68-anti-wear-hydraulic-oil-18-9-l-0280214p.html

This would probably be the closest thing?

Thanks for looking that up. I hadn’t even thought about hydro oils.

 

[Don_B]

Ancient thread, don't know if anyone is still paying attention but gotta ask... Did you ever find any of this oil?
I just went to an auction, no April fool's but the sale was held on 4/1
I have no less than 48 CASES of QS 20w20 in my garage at this moment. Location near Chicago

 

[Warlord]

Ancient thread, don't know if anyone is still paying attention but gotta ask... Did you ever find any of this oil?
I just went to an auction, no April fool's but the sale was held on 4/1
I have no less than 48 CASES of QS 20w20 in my garage at this moment. Location near Chicago

Hey I never did find any 20w20 but I ran SAE 30 and it seems fine.