Dumb question, H55h fluids?????? (1 Viewer)

[boerboel313]

What fluid should be in there?
80/90?
Transmission Fluid?

Just purchased the hose from shipmag to equalize fluids between Tranny and Tcase.

The 4x4 selector rode oil seal and boot need replacing but won't get to that until we return from Yosemite this weekend.

Just need to ensure levels are maintained during trip.

 

[FARMAN33]

80/90 in trans and transfer.

 

[boerboel313]

Thank. You

 

[Prairie Swamp]

I can't speak to the H55 specifically. But doing a ton of research for my Tacoma and FJ Cruiser - Toyota wants GL4 in the transmissions because some of the additives in GL5 can be hard on the brass and bronze in the transmission. GL4 might be hard to find in the auto part store. I bought RedLine MTL GL4 from Amazon and it really improved shift quality over the Mobil1 I had been using.

 

[bwesty]

I would consider using Redline MT90
Red Line Synthetic Oil - Gear Oil for Manual Transmissions - MT-90 75W90 GL-4 Gear Oil

 

[Prairie Swamp]

I would consider using Redline MT90
Red Line Synthetic Oil - Gear Oil for Manual Transmissions - MT-90 75W90 GL-4 Gear Oil

Without going out in the garage - I think that is what I have in the Taco and FJ Cruiser. Very happy with it.

 

[OSS]

Mobil no longer recommends using their 75w-90 synthetic gear in transmissions. It's too damn slippery. Synchronizer cones can grip.

 

[SteveH]

I found that Mobil 75w-90 in my '98 4Runner was not good. I drained all but about a pint, and replaced it with non-synthetic and it shifted considerably better. With full synthetic, it was clashing on shifts.

 

[Kleatus]

I would consider using Redline MT90
Red Line Synthetic Oil - Gear Oil for Manual Transmissions - MT-90 75W90 GL-4 Gear Oil

I've ran this stuff in a multiple R150F's and Getrag 260's and it has provided improved shifting in every case.

 

[boerboel313]

I can't speak to the H55 specifically. But doing a ton of research for my Tacoma and FJ Cruiser - Toyota wants GL4 in the transmissions because some of the additives in GL5 can be hard on the brass and bronze in the transmission. GL4 might be hard to find in the auto part store. I bought RedLine MTL GL4 from Amazon and it really improved shift quality over the Mobil1 I had been using.

What about AMSOIL?

 

[boerboel313]

Great, after we get from Yosemite and replace the oil seal and boot, I'll take your input and run with some new Tranny and gear oil.

 

[Godwin]

I have found Sta-Lube GL4 at NAPA.

API/GL-4 Multi-Purpose Gear Oil 85W90, 1 Gal

 

[Prairie Swamp]

I have found Sta-Lube GL4 at NAPA.

API/GL-4 Multi-Purpose Gear Oil 85W90, 1 Gal

Thanks for that. Good to know there's a local source for GL4 in a pinch.

 

[bwesty]

I've ran this stuff in a multiple R150F's and Getrag 260's and it has provided improved shifting in every case.

I have had the same experience with Toyota manual transmissions using the MT90

 

[Mace]

I use the cheapest gear oil I can find...