Petrol/Gas US Oil for B58 Engines

[HereinDaRockies]

Not yet. Just shy of 8k on the clock and going to do it at 10k with the diffs. Should be pretty simple in terms of process. Going to use Valvoline 75-90 Synthetic all the way around.

Fill the transfer case until it overflows the fill hole?

 

[LWA55DAL]

Yes - that’s the same on the diffs. You want to do it cold as the oil will expand if it’s hot, but honestly - by the time you drain and fill - it won’t be that hot and your fine.

I personally overfill until it wants to keep coming out of the fill hole and plug it.

 

[HereinDaRockies]

I wonder if there is a filter for the transfer case’s radiator system. To filter out metal shavings..

 

[HereinDaRockies]

drained the transfer case today.. very easy. The fill and drain plugs are positioned well for easy access.

Opened the fill plug, and no fluid poured out. The drained oil had a lot of metal dust particles. I believe this is considered normal for a new transfer case going though break in period

 

[LWA55DAL]

How many miles do you have? I am right at 8k so likely going to do it this weekend. Not shocking there were metal shavings. I have never seen a filter in a transfer case or axle. No pump to push it through the filter.

 

[HereinDaRockies]

How many miles do you have? I am right at 8k so likely going to do it this weekend. Not shocking there were metal shavings. I have never seen a filter in a transfer case or axle. No pump to push it through the filter.

Under 1k on the odo

 

[255/85]

I have never seen a filter in a transfer case or axle. No pump to push it through the filter.

There are small filter screens and dedicated fluid pumps on many chain-drive transfer cases (NVG, etc) but they use lightweight ATF instead of gear oil. I've not seen a pump or filter in a gear drive 'case. If we knew the internal layout of the Tremec used in the Grenadier it might be possible to affix a powerful magnet to the exterior that would trap shavings against the inside wall.

 

[Clark Kent]

There are small filter screens and dedicated fluid pumps on many chain-drive transfer cases (NVG, etc) but they use lightweight ATF instead of gear oil. I've not seen a pump or filter in a gear drive 'case. If we knew the internal layout of the Tremec used in the Grenadier it might be possible to affix a powerful magnet to the exterior that would trap shavings against the inside wall.

Something is creating a positive flow to circulate the hot oil from the transfer case sump to the cooler in the LH wing and back to the top of the transfer case. I'll take a stab there's a small paddle pump in there somewhere.

 

[LWA55DAL]

Something is creating a positive flow to circulate the hot oil from the transfer case sump to the cooler in the LH wing and back to the top of the transfer case. I'll take a stab there's a small paddle pump in there somewhere.

Forgot about that and very good point. It would not shock me to see an electric pump on the T case. Next time I am crawling around I’ll see if I can trace the lines. Should be simple to tell if it’s external or internal.

Now - there might be a temp valve in the system to also keep the temps at a constant level - lots of transmissions have that now but ATF fluid.

 

[255/85]

Forgot about that and very good point. It would not shock me to see an electric pump on the T case. Next time I am crawling around I’ll see if I can trace the lines. Should be simple to tell if it’s external or internal.

I don't remember seeing anything between the transfer and its dedicated radiator the last time I was under there but I wasn't looking for it either. The lines are pre-formed and look to be designed to handle some pressure which I thought was odd if it was somehow just passively circulating so an internal pump makes sense.

Now - there might be a temp valve in the system to also keep the temps at a constant level - lots of transmissions have that now but ATF fluid.

I was under the impression that the cooler was added fairly late in the development process to address overheating issues seen in real world testing. I probably read that somewhere here so it could have been conjecture back when everyone was theorizing.

 

[Michael_in_Baja]

I live in places that regularly exceed 100°F there's no way I'm going to use a 0w 20. I am using Liqui Moly 5w30.