Hi to all. Bit of a techncial question here . Hope someone will know the answer. I'm at the moment changing the oil on my diff and have also removed the super efficient ( not ) diff oil cooler on my uk tt...I know the jap imports dont have this, so to tidy alot of the back end of the car up, i removed the cooler and all the associated piping.. My questions being, is what is the optimum amount of fluid you put in the diff ( without the cooler ) and what type of oil should yopu use...( no debates please !! lol ) :hyper: :hyper: :hyper:

Optimum amount is up to the level of the filler plug. The type is in the manual online or in your handbook.

It may be academic and unlikely you will ever cruise it at 100mph plus anyway but imports didnt need one because they were speed limited for the Japanese home market.

My view is if it aint broke dont fix it. Most people add coolers where possible, not take them away.

I bet that my non-cooler equipped import would have liked it on the thrash back from Le Mans - it was bloody hot and we had to keep the speed down to keep the water temp at a sensible level. With the air temp at 30 degC plus it could have been a real problem !

thanks for the comments, but if you had seen the state of the pipes from the diff and the state of the actual radiator ( for the cooling ) you'd understand why I got rid of them. The pipes were very very very rusty and the radiator was totally covered in wax oil ( from the previous owner !! ) and was acting more like a heater!! lol

thanks for the comments, but if you had seen the state of the pipes from the diff and the state of the actual radiator ( for the cooling ) you'd understand why I got rid of them. The pipes were very very very rusty and the radiator was totally covered in wax oil ( from the previous owner !! ) and was acting more like a heater!! lol

 

 

It would not act like a heater. The only way that would happen if the piping and radiator produced its own heat and was hotter than the diff oil.

 

It is probably not cooling as efficient as it used to but it will be cooling better than if it was trapped in the diff