Chuck, you'll definitely see an improvement by changing the 90w to a lighter oil in cold weather. 90w turns to molasses at those temps. You're using 134 in the hyd. tank. I'm pretty sure that's what ford/NH is using in thier stuff, however I don't have any personal experience with it. I'd imagine it's very similar to what JD and Kubota uses in their machines.
Did your hydraulics improve to your satisfaction once the fluid
warmed up? As long as the hyd's worked good once they warmed up, I don't think you're having a mechanical problem.
Not knowing that much about the 134, I know the low viscosity
hygaurd (by JD) and the super udt (by Kubota) are formulated specifically for low temperature operation. So maybe try either of those in the hyd tank and use the utf or utd in the gear boxes and see if that improves your cold temperature performance. Then again you could spend a few days/w3tcompact/icons/eyes.gif searching through oil fuel and lubricants to learn more about the synthetic oils, seems I've read where some guys claim better cold weather performance from the synthetics. The only real info I have from experience with synthetics is from Jet engines, and there good pretty much down to - 35 derees F for engine starting, allowing the engine to warm up to 40 C (about 104 F) before moving the throttles.
But that mostly applies to turbo-prop engines due to the variable pitch hydraulically actuated prop piston that's prone to leakage at colder fluid temps, which by the way uses a synthetic hyd fluid......O.K. I think I'm getting into the way too much information category here, so give those ideas a shot and see how you make out.
Did your hydraulics improve to your satisfaction once the fluid
warmed up? As long as the hyd's worked good once they warmed up, I don't think you're having a mechanical problem.
Not knowing that much about the 134, I know the low viscosity
hygaurd (by JD) and the super udt (by Kubota) are formulated specifically for low temperature operation. So maybe try either of those in the hyd tank and use the utf or utd in the gear boxes and see if that improves your cold temperature performance. Then again you could spend a few days/w3tcompact/icons/eyes.gif searching through oil fuel and lubricants to learn more about the synthetic oils, seems I've read where some guys claim better cold weather performance from the synthetics. The only real info I have from experience with synthetics is from Jet engines, and there good pretty much down to - 35 derees F for engine starting, allowing the engine to warm up to 40 C (about 104 F) before moving the throttles.
But that mostly applies to turbo-prop engines due to the variable pitch hydraulically actuated prop piston that's prone to leakage at colder fluid temps, which by the way uses a synthetic hyd fluid......O.K. I think I'm getting into the way too much information category here, so give those ideas a shot and see how you make out.
