I replaced the oil cooler with a 2nd hand cooler and I've flushed about 70 litres of AW-1 (JWS 3324) transmission fluid through it. The fluid coming out is now as clean as the fluid going in so here's hoping...
I had 10 litres of Millers Oils JWS 3324 I'd ordered from Opie Oils that was £62, then I used 3 x 20 litre tubs of Smith & Allen JWS 3324 that were £84.99 each... So it's had over £300 worth of gearbox oil to get it flushed.
I also dread to think how many gallons of water were flushed through it with the hose in the header tank and a pipe routed into a big tub to catch the oil coming out of the cooling system. I've spent hours on it.
It's done about 4-500 miles since the problems were identified. Over 20 litres of fluid was just changed after running it up and down the gears on the ramp before it even got near the road. I was beginning to wonder if the fluid was going to come clean but thankfully it did.
Yesterday I replaced the coolant bottle as I couldn't get the oil and staining off the old one and did another oil change before doing the 63 mile round trip to the office today.
Tonight, I've done the final flush and set the level in the gearbox so now it's up to the gearbox gods to see if the car is going to behave or not.
Tomorrow, I'm headed to Peterborough for work... let's hope it behaves!!
David.