Stockist/cheapest for coolant/auto box oil

[Nomis]

Originally Posted by crofts

Yes Waj, only use the N 402. People loosly claim 'it's the same' but it is not.
I did a lot of searching on the subject with, initially, Ashcroft Transmissions telling me to use Castrol. I then actually contacted Castrol. Their reply " We do not make a fluid suitable for the Jatco Box"
Apart from Land Rover, several Japanese cars also have Jatco boxes and Jaguar have also used them, They all probably sell The N402 but it will be in their own branded pack as is the Rover Fluid.
I have heard that Jatco boxes operate at high temperatures. Whether this is true/different to others I don't know but i am informed that N402 has additives not present in other brands.
On reliability/cost/preventative grounds I intend to change every 30000 miles, not 60000. It is not prohibitively expensive. (about £40)
Unless you are completely happy that you can carry out the change as reccommended I would strongly suggest you take it to a GOOD auto specialist. The temperature on refilling is fairly critical.

When you say temperature on refilling do you mean engine temp or does the fluid need to be of a certain temp? I have read how to do it and it is easy to get to the drain plug so it should not be a long job once up on axle stands. I am not keen on specialist prices to be honest.

Can you explain what I have to do that is critical? I have read the how to pdf from here and have details from the workshop manual too.

Simon.

[GreyGhost]

Originally Posted by waj

When you say temperature on refilling do you mean engine temp or does the fluid need to be of a certain temp? I have read how to do it and it is easy to get to the drain plug so it should not be a long job once up on axle stands. I am not keen on specialist prices to be honest.

Can you explain what I have to do that is critical? I have read the how to pdf from here and have details from the workshop manual too.

Simon.

First paragraph on page 2 of the PDF states temperature of fluid needs to be between 35 and 45 degrees centigrade to obtain a correct level reading.
Engine temperature is arbitrary.

Hope this helps

[Nomis]

Originally Posted by Grey Ghost

First paragraph on page 2 of the PDF states temperature of fluid needs to be between 35 and 45 degrees centigrade to obtain a correct level reading.
Engine temperature is arbitrary.

Hope this helps

This will help yes. Though I am sure not all garages will do this before filling them as they will probably not be NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-! I will make it the correct temp or as near as possible before refilling and make sure the correct amount is put in. I will see what comes out too as sure its not been changed bfore now. Its just done 60k

Cheers

Simon.

[GreyGhost]

Originally Posted by waj

This will help yes. Though I am sure not all garages will do this before filling them as they will probably not be NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-! I will make it the correct temp or as near as possible before refilling and make sure the correct amount is put in. I will see what comes out too as sure its not been changed bfore now. Its just done 60k

Cheers

Simon.

I would suggest in any event that after refilling and running the vehicle for a very short test trip that the level be checked and topped off if necessary. Just in case the fluid cools below the required temperature while filling takes place. Call me pedantic but better safe than sorry

[Nomis]

Originally Posted by Grey Ghost

I would suggest in any event that after refilling and running the vehicle for a very short test trip that the level be checked and topped off if necessary. Just in case the fluid cools below the required temperature while filling takes place. Call me pedantic but better safe than sorry

Thats a very good idea. I will have the cover off all day anyhow saturday as doing the oil and filter and also the coolant change.

I will do it properly (hopefully) as thats the whole point of doing it myself as then I know it has the correct fluids in there and I know it has been done.

The air filter is so black at the moment you cannot see any white bits so not sure when that was changed either, but got a k & n on its way to solve that.

Will the auto oil expand when warm then? If so if it is warmed to within the temp range and checked to make sure will it be the recomended capacity while at that temp or is it the recomended capacity while cold? Confusing!

While I am here, the refill plug, is that located above the box at the front end near the battery with a rubber plug? Only had a very quick look so far. The diagrams are a little unclear.

Simon.

[GreyGhost]

Originally Posted by waj

Thats a very good idea. I will have the cover off all day anyhow saturday as doing the oil and filter and also the coolant change.

I will do it properly (hopefully) as thats the whole point of doing it myself as then I know it has the correct fluids in there and I know it has been done.

The air filter is so black at the moment you cannot see any white bits so not sure when that was changed either, but got a k & n on its way to solve that.

Will the auto oil expand when warm then? If so if it is warmed to within the temp range and checked to make sure will it be the recomended capacity while at that temp or is it the recomended capacity while cold? Confusing!

While I am here, the refill plug, is that located above the box at the front end near the battery with a rubber plug? Only had a very quick look so far. The diagrams are a little unclear.

Simon.

Not done the job myself, perhaps someone like Lates is the bloke to double check with, PM him with your questions, he will pick it up later on this evening when he logs on.
The fluid will definitely expand when hot. It seems to me that filling within the temperature range stated will prevent overfilling, which would be bad news.

[Nomis]

Originally Posted by Grey Ghost

Not done the job myself, perhaps someone like Lates is the bloke to double check with, PM him with your questions, he will pick it up later on this evening when he logs on.
The fluid will definitely expand when hot. It seems to me that filling within the temperature range stated will prevent overfilling, which would be bad news.

Thanks for that. Makes perfect sense to me.

I am not doing it until the weekend (if my MGR dealer has it in stock) so gives me plenty of time to suss it out.