Royal Purple 75w-90 with a friction modifier. I don't change often so I use synthetic.
H55F tranny - gear or transmission fluid??
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Tapage
Club 4X4 Panamá
When we use a GL-5 product in a transmission that requires GL-4, we normally find 2 to 4 times as much copper in the used oil as we would with a GL-4 product. Eventually the synchronizers wear to the point that they no longer make contact with the other half of the cone, bottoming out before stopping the opposing gear.
Just remember that GL-4 and GL-5 are gear oil ratings, not transmission oil ratings. Transmissions have gears AND synchronizers. These seemingly conflicting requirements must be met differently.
When someone tells you that their GL-5 covers GL-4, remember they are correct as far as EP protection, but that is only half the answer. When they say their Sulfur/Phosphorous additive will not corrode the yellow metals, they are also correct, but if there are enough to meet GL-5 protection, they will slowly peel away your brass synchronizers.
http://www.widman.biz/uploads/Transaxle_oil.pdf
Not from my inspiration .. was taken from website ..
Just remember that GL-4 and GL-5 are gear oil ratings, not transmission oil ratings. Transmissions have gears AND synchronizers. These seemingly conflicting requirements must be met differently.
When someone tells you that their GL-5 covers GL-4, remember they are correct as far as EP protection, but that is only half the answer. When they say their Sulfur/Phosphorous additive will not corrode the yellow metals, they are also correct, but if there are enough to meet GL-5 protection, they will slowly peel away your brass synchronizers.
http://www.widman.biz/uploads/Transaxle_oil.pdf
Not from my inspiration .. was taken from website ..
Good read, thanks
Cruiserdrew
On the way there
I've been running the Redline MT-90 in mine now about 4-5 years. It works perfectly for this tranny. I don't change it very often-probably should soon. Thanks for the reminder.
If the gearbox is a bit tight or worn you can use Castrol 75 90 M it was made for Mitsubishi boxes that had a problem with syncro's as the ordinary 75 90 made those boxes hard to shift so additives were incorporated to make shifting easier. Works really well on early 80 series boxes easing the 1st to second shift especially.
That sounds like just the oil that I need!!!
Seems like Castrol syntec 75w-90 has the same data sheet as the Syntrax. And it seems that Syntrax can't be had in Canada according to all the parts outfits I have asked. So I will try out the Syntec.
But both the Syntec and Syntrax or GL-5 rated....
You guys raise a good point regarding the GL4/5, I run castrol multitrax 75/90, across diffs and h55f. I checked and checked with technical all other alternatives in product range, this 75/90 continually was the prefered choose by tec standards, I'm going to recheck the bronze GL5 claims and report.
About to purchase all my oils for an initial baseline tune up on my HZJ75 troopy when it finally finds its way to my driveway. I plan on going with 80W-90 for the transmission. Now my question is how much oil does the H55f require ? Should I use the same gear oil in my diffs as well?
I found all my engine lubrication info in a FSM for the 1HZ but cant find the same kind of info for the H55f or diffs.
Also, seems like the GL4/5 discussion wasn't really resolved. Any updates there?
I found all my engine lubrication info in a FSM for the 1HZ but cant find the same kind of info for the H55f or diffs.
Also, seems like the GL4/5 discussion wasn't really resolved. Any updates there?
Tapage
Club 4X4 Panamá
75W-90 GL4
Cruiserdrew
On the way there
AutoZone (thus easy to get) has a new addition to the gear oil shelves:
Chevron Delo SynGear XDM 75W-90. Has GL-4 and MT-1 certs right on the bottle. Also significantly cheaper than the Mobil1 75w-90 which is the other readily available alternative.
http://www.autozone.com/greases-and...thetic-gear-oil-sae-75w-90-32-oz-/443149_0_0/
Chevron Delo SynGear XDM 75W-90. Has GL-4 and MT-1 certs right on the bottle. Also significantly cheaper than the Mobil1 75w-90 which is the other readily available alternative.
http://www.autozone.com/greases-and...thetic-gear-oil-sae-75w-90-32-oz-/443149_0_0/
Awesome! How much does the H55f take? and would you use that same chevron 75W-90 in the diffs as well?
I think 10 litres will do the gearbox/transfer case and 1 diff. If yours is a KO85 on the aluminium plate, it means you have an LSD in the rear.
If the LSD is still working ,you should use LSD oil. If not, ,normal gear oil will suffice, same as the gearbox.
If the LSD is still working ,you should use LSD oil. If not, ,normal gear oil will suffice, same as the gearbox.
Perfect, thanks!
Cruiserdrew
On the way there
I think the H55f takes 5.5 quarts of gear oil-but when you fill it, you just fill until it runs out of the filler hole. If you start with 6 quarts, you'll fill it with some left over for top off.
For differentials, I'd just use plain GL-5 80W-90.
The OP lives in Winnipeg. Therefor you cannot use a thick oil. If it's a winter vehicle. I'm nearby in Kenora and I know from my experience that 75/90 synthetic is better. In Canada we are not like other climates. Even summer isn't really all that hot compared to southern US or OZ.
The transfer case also uses the same oil. If the transmission was the auto the transfer case would take the automatic trans fluid.
The transfer case also uses the same oil. If the transmission was the auto the transfer case would take the automatic trans fluid.
Much appreciated fellas. Auto zone was short on supply so I had them order more of that chevron 75w-90 synthetic. Got that for my transmission, transfer case and front diff. Then some castrol limited slip synthetic 75w-90 for the rear diff. Should be perfect for NW US climate this winter. I will report back if any issues but otherwise just assume the troopy is loving it.
