(28-01-2015, 04:26 PM)JJ0063 Wrote: Oil cooler is best case

Worst case is HG I suppose

(28-01-2015, 04:23 PM)Nathan1305 Wrote: Surely if it's a big issue I would have temp or running problems?

(28-01-2015, 04:33 PM)Toms306 Wrote:

(28-01-2015, 04:23 PM)Nathan1305 Wrote: Surely if it's a big issue I would have temp or running problems?

Nope, oil and water mixing wont necessarily cause noticeable problems.  Its when something leaks (oil/water) into the cylinders that you get running problems, and when exhaust gets into coolant you get temp problems.

Not sure how to prove whether is the cooler or HG in your case  though.

(28-01-2015, 04:47 PM)Toms306 Wrote: The headgasket can fail in different ways, its job is to keep cylinders, waterways and oilways separate.

Usually XUDs and TUs fail between cylinder and waterways so the coolant hoses fill with exhaust until the either a hose or the rad cap gives out and blows orange shit around the engine bay.

If it fails between oilway and cylinder you'd get blue smoke from burning oil.

If either of those happen you'll lose compression so the engine wont run well.

IF it only fails between the oilway and waterway not much will happen tbh, it'll just make a bit of a mess lol.  Frothy oil and mayo, or slimy coolant.  But obviously thin oil will allow more wear in the engine.

(28-01-2015, 06:08 PM)Toms306 Wrote: Depends if its the cooler or the headgasket lol...as said I cant think of a test to prove it so only thing is to change the cheapest one (cooler) and go from there.  Someone else may have a better test though.

Definitely drain both oil and coolant and flush coolant system well before refilling it.

(28-01-2015, 06:33 PM)Toms306 Wrote: He wants an extra cooler for track use though I think...

Though personally I'd replace with a standard one for a tenner to make sure it is that at fault first.

(28-01-2015, 06:46 PM)Toms306 Wrote: Yeah I get that, but for peace of mind (and before going to hassle and effort of fitting everything else) I'd want to make sure it is the cooler rather than the HG so would just spend a tenner on a standard one first.  If it turns out it is that, great, you're only down a tenner and can buy and fit an aftermarket cooler with everything else, if not you have to think about whether you want to attempt the HG yourself or the costs of getting it done elsewhere - and you may need the funds to do that that you've put into an aftermarket cooler that is no good until the HG is fixed...

Hopefully that makes sense, and is only my 'prepare for the worst' opinion lol.

(28-01-2015, 06:51 PM)Toms306 Wrote: On here probably?  Not sure if HDi ones are the same?  If so I may have one...

(28-01-2015, 09:14 PM)Mattcheese31 Wrote: I've got a couple on cars I'm breaking, pm me if you need fella

(28-01-2015, 09:23 PM)bashbarnard Wrote: Just put a pipe between bypass it. Flush the coolant through. Start it up run to temp. Check oil\water is it ok. Yes then its the cooler. No then its the head gasket.