AC dye, ok to put in engine/gearbox?

[Flossie]

200tdi in me tratter. Chasing oil leaks, the transbox is proving a pita to find a leak or leaks same with the engine. Got a UV torch so a bit of dye in the oil should help but will it bugger something?

 

[boguing]

Ring's RLD4 does oil.

(Edit. A dye that mixes happily with water probably won't with oil).

 

[biketeacherdave]

A/C dye is fine for what you want they put oil in the a/c to lubricate the ac pump and seals.

 

[Flossie]

Cheers lads, gonna cost me £30 but worth it.

 

[boguing]

Cheers lads, gonna cost me £30 but worth it.

Brake cleaner and blue paper towels?

 

[Flossie]

Brake cleaner and blue paper towels?

Instead of the dye? Nah, spent way too much time with torch, mirrors, rags and degreaser and not got far.
That dye is £10 but only treats 4L or so of oil so that's 2 bottles for the engine and one for the box.
I've got a leak on the p38 engine as well and can't find the source for that either

 

[Flossie]

Think I'm out of control, ordered 6 bottles @ £41.

 

[Flossie]

Thanks to @boguing for the ring leak detection stuff heads up.
Decided to try it yesterday in the transfer box. Put 1 bottle in after topping up the oil level, went for a run to mix it all up then waited until it went darkish outside. UV torch showed the culprit straight away, glows bright white, it's the intermediate shaft O ring which is tucked up high when viewed from underneath which made it difficult to see as the oil is clear. Goggling about brings up worn transfer case housing as the worst scenario and just an O ring change at best. Its box out to do either job but as its not a really bad leak I'm going to just change the O ring when the weather's nicer.

 

[Anaconda]

You can release the transfer box and slide it back a little to do the o-ring if you like.

 

[Flossie]

You can release the transfer box and slide it back a little to do the o-ring if you like.

Yeah, I've read that, I'll see how fit I feel on the day. I've got an engine crane so I won't particularly struggle if I drop it out .

 

[resto_d1]

Thanks for this Flossie. Phil recommended this to find my water leak on disco (now solved) but now want to find what I’d bet money on is same leak as yours but want to confirm it!