Was just wondering. I found a gear oil at Wally World and noticed this 80w/90 gear oil (GL-5) is yellow metal safe but it doesn't say anything about being ok for hydraulics. Does it half to? Would it be ok for a N series Ford? I normally use the straight 90w mineral oil but get frustrated when the temps get cooler and the hydraulics get slower. All the UTF oils even meeting the New Holland specs just seems so thin to me. Not saying it doesn't protect but I'm always worry about leaking threw axle seals. Also I can mow up to 6-8 hours a day at times in the hot summer. I would like to have thicker oil. Some can be as lite as a 20W. I'm looking for something thicker. Can anyone find straight 80 mineral oil?
- Thread starter Jason1Pa
- Start date
I would check that out, I do not think 80/90 weight gear oil is the same oil as 90 weight mineral oil non detergent,
I just leave the lift in the down position, I start the tractor, by the time it warms up the lift will come up,
You are right old tired lift pumps do not like thick oil,
I understand in England they can buy non detergent 15w40 oil and many use that type oil, I never found that oil over here so I when back with 90 weight non detergent mineral oil from Napa,
I just leave the lift in the down position, I start the tractor, by the time it warms up the lift will come up,
You are right old tired lift pumps do not like thick oil,
I understand in England they can buy non detergent 15w40 oil and many use that type oil, I never found that oil over here so I when back with 90 weight non detergent mineral oil from Napa,
Ultradog MN
Well-known Member
- Location
- Twin Cities
The UTF or HyTrans oils that meet the Ford 134D specs do seem thin.
But the guys on the Ford board, many of them with 60,90, even 120 HP tractors all use 134D with good results.
But the guys on the Ford board, many of them with 60,90, even 120 HP tractors all use 134D with good results.
All my N's have new seals and I don't have any leaks and like to keep it that way. I understand the oils have changed for the better but I'm still looking for something thicker just for my own satisfaction. I believe the NW oil is somewhere around a 40 50 weight oil. Not too too bad but I wouldn't want to get any thinner. I've heard many even with a healthy hydraulic system that after a long day of use the thinner stuff gets heated up and the lift won't work.
Ultradog MN
Well-known Member
- Location
- Twin Cities
Don't over think this.
Use 134D.
Use 134D.
Hobo,NC
Well-known Member
- Location
- Sanford, NC
80/90 is what I use in a N it still has minor cold issues but no were close to those 90 wt possesses. Your hydraulics will luv 80/90.
It's a quick job to drain and refill the hyd/trans oil . Run the thin in the winter and the thick in the summer . With no filter and prone to water issues draining and filtering your oil twice a year is probably some of the best maintenance you can do for an N. You already have a handy 5 gal bucket w/ lid :wink:
Should work just fine. That harms yellow metal supposedly caused change to straight mineral oil 90 was a bunch of internet generated hoopla. The real cause for SMO 90 spec was to provide an alternate due to material shortages of WWII. Those of us that were there know about the war effort and scarcity of most everything especially fuel and oils.
TheOldHokie
Well-known Member
- Location
- Myersville, MD
Here are some hard engineering data for you to mull over:
- [*:972fbd77c2]Ford/New Holland/CNH Mutli-G 134 is a modern UTTF and has a measured viscosity of 9.4 cSt @ 100C, 60 cSt @ 40C, and a viscosity index of 136. That data comes straight from the manufacturer's technical support department and is the basis for grading lubricating oils[*:972fbd77c2]In the gear oil world 9.4 cSt falls smack in the middle of the grade SAE 80 requirements.[*:972fbd77c2]In the engine oil world 9.4 cSt barely makes it over the minimum requiremtn of 9.3 cSt for grade SAE 30.[*:972fbd77c2]The viscosity index of 136 would allow it to qualify as a grade 10W30 engine oil or a grade 70W80 gear oil. [*:972fbd77c2] If graded as a hydraulic oil the 60 cSt datum would but it just short of the 61.2 cSt minimum for an ISO grade 68 oil and well over the allowed maximum of 52.06 for an ISO grade 48 oil[/list
:972fbd77c2] In terms of final drive wear protection most premium UTTF's including Ambra Multi-G will pass the performance test requirements of a GL4 gear oil which are far in excess of the performance of any grade of GL1 gear oil.
In terms of hydraulic oil performance it more than meets the minimum viscosity requirements of gear, piston, and vane pumps. If your hydraulic system isn't working when it gets hot it is because of hydraulic system wear or leaks not viscosity.
And last but not least virtually all modern GL5 gear oils are more than safe for use in an N-series. They contain buffered/inactive sulfur (EP additives) which require very high surface temperatures (+300C) to activate. Those temperatures are not present in the N-series hydraulic system and the additives pose no danger to the few yellow metal components in the hydraulic pump. In fact modern GL5 gear oils are even safe for use in a many (but not all) synchromesh transmissions.
As regards other brands of oil the CNH product is virtually identical in all of those aspects to the generic off the shelf premium UTTF's you will find in your local tractor or auto supply.
So stop speculating and use that hard data to pick a type and grade of oil for use in your tractor that meets your satisfaction.
TOH
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