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QuoteReplyTopic: CA Hydraulic/Transmission Oil Posted: Yesterday at 12:26pm
CA recommended SAE 10W <40f, 20W >40f
I bought hydraulic fluid at NAPA, showed them a picture of the 10W20 product I wanted, paid, but they brought out a 30W product and put it in the car. I didn't pay attention that they didn't give me what I asked for. Anyway, the pump works well but sometimes it takes a while longer than desired to prime. Nobody uses SAE oil ratings for hydraulic fluid any more, and it's not clear what the best ISO grade to use is:
SAE 10 weight viscosity: 45mm**2/s at 40C, 7.0mm**2/s at 100C
SAE 20 weight: 61mm**2/s at 40C, 8.5mm**2/s at 100C
ISO 32 weight: 32mm**2/s at 40C, 5.5mm**2/s at 100C
ISO 46 weight: 46mm**2/s at 40C, 7.0mm**2/s at 100C
ISO 68 weight: 68mm**2/s at 40C, 9.5mm**2/s at 100C
None of the ISO ratings match the original specs. I don't suppose those were too precise. I'm inclined to go with ISO46AW. But that seems to equate more closely to a SAE 10 weight. Hopefully, the "AW" additives will help make up for any differences. yes/no?
Why are they rating these at 40C??? that's 104F (and 212F).
Considering the 'relatively' light work your CA will likely see in Texas, I would use the ISO 32. If you intend to cultivate cotton in 95 degree heat for 12 hours at a time then use the ISO 46.
The ISO 32 works perfectly in my somewhat cooler climate here in northern Idaho, ISO 46 is somewhat sluggish.
QuoteReply Posted: 22 hours 12 minutes ago at 5:41pm
Dennis J OPKs wrote:
I have used straight 30w non-detergent in KS, not zero temps and it works fine.
At some point, AC added a check valve in the inlet, presumably to improve priming. 1952 doesn't seem to have a check valve/ball. It's a minor problem, but sometimes it can take 10-15 seconds (or longer if its cold) before it starts to pump, usually on a fresh startup. May be a combination of wear and oil viscosity. With thicker oil, it was nearly impossible to get it to prime.
QuoteReply Posted: 21 hours 48 minutes ago at 6:05pm
Les Kerf wrote:
Considering the 'relatively' light work your CA will likely see in Texas, I would use the ISO 32. If you intend to cultivate cotton in 95 degree heat for 12 hours at a time then use the ISO 46.
The ISO 32 works perfectly in my somewhat cooler climate here in northern Idaho, ISO 46 is somewhat sluggish.
The tractor is in Indiana. It will have a relatively easy life for the foreseeable future. It may on occasion do some plowing/discing. My brother is eyeing it for his garden. It may be used for some brush hogging if I get the smaller one working, but mostly finish mowing.
QuoteReply Posted: 8 hours 2 minutes ago at 7:51am
The CA system is very very BASIC... ISO 32, 46, or 68 normally works fine.. If YOUR tractor specifically has trouble priming and you know the 46 has an easier time, then that is totally acceptable... HYTRANS type oils are also commonly used, but they can be 30wt on some brands.. some are 20wt and some are 10w30 type viscosity.. You have to watch that if you normally have trouble with 30wt oils..
QuoteReply Posted: 5 hours 7 minutes ago at 10:46am
HudCo wrote:
i use hydralic transmission oil in my C , and in all my allis tractors i use the brands dr. allis listed or ones with the same qualitys like mobile424
That's what I have in it now and it isn't quite behaving as I'd like. Once it primes, it's fine. I know that it has trouble priming with thicker oil. I just don't want to run something that's too thin.
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Dennis J OPKs wrote:
