Thread: Ashcroft ATB/Torsen Diff Front, Centre & Rear Install

Originally Posted by rick130

Motul Gear 300 75W-90

It has a crazy high viscosity index so provides good lubrication to the internals at low ambients while not thinning too quickly at high working temps, plus it has no LSD friction modifiers to reduce the bias.

Yeah i am trying to track this down up here for my gearbox. 6L will hurt the back pocket though

Originally Posted by Vern

Yeah i am trying to track this down up here for my gearbox. 6L will hurt tue back pocket though

some type of Liqui-Moly (GL4+/GL5) will confirm later

Originally Posted by Vern

Yeah i am trying to track this down up here for my gearbox. 6L will hurt the back pocket though

Ooh yeah. It's at least $30/litre.

Originally Posted by rick130

Ooh yeah. It's at least $30/litre.

Wish i could find it for $30/L

Hi guys, I have a Ashcroft ATB in the center diff, and an Detroit/Eaton true track, torsen diff in the front.

The trutrack is similar to the ATB of Ashcroft, and yes is does have a centering effect and make the steering a little heavier, ( and seems more settled on the road).

when I fitted the Ashcroft to the T/C, I can't say I noticed any difference.

I use Penrite Trans-gear semi synthetic on the diffs and TC, and routinely check the temps using an IR gun when I stop for a break at the service centers on the high way. Cruising at 100-110 k.

diffs normally- F about ambient plus 20 deg, - R ambient plus 25 nor 30 deg, -transfer case ambient plus 25, -gearbox ambient plus 35 degrees C, wheel hubs, ( also transgear 80-90), ambient plus 20.
Running full synthetic Progear 70-75 in the gearbox.

Those temperatures indicate to me a fairly healthy drive line, the diffs and TC are fairly primitive bits of gear, I don't think they warrant too much special attention in terms of oils, If penrite say its Ok, it'll do me : ) ( no I'm not employed by them , just a 30 year satisfied customer.

For the last 10,000 kms, I'm running an experiment with a magnetic filter on my gearbox, connected to the oil cooler fitting. I just have to get around to taking a sample and sending ending it off. I'd like to do something similar with the diffs and TC. IMV, The oil is in the comfort zone in terms of temperature, its oil cleanliness is the area to work on.

cheers simmo.

Originally Posted by Vern

Wish i could find it for $30/L

I have to admit I haven't bought any for over two years, the Deefer hads probably only done 5-7,000km in that time.