Hi, just wondering if anyone can help me with a problem.
Iv got an 05 classic, did a coolant flush about a month ago, at which point the overflow tank filled up as well (with old and new coolant), got told there was no point in emptying it. Now the coolant has gone almost oily black. It's not sludgy at all and no white creamy buildup anywhere in the coolant or oil system.
There hasn't been any overheating. Temp gauge rises as it should to regular level. No dives in performance.
My first instinct for oily coolant would be headgasket trouble but the absence of any other signs has me wondering.
Anyone got any ideas?
Thanks

@ronniecabers didn't you have this too a while back |?

Yep and i still have it. It comes and goes.. sometimes i'll clean it out and the oil will not return for months! I have had this for about 2 1/2 years now with no loss of performance...i still tow with it too. Yes i am probably on borrowed time , even my local garage can't wirk out whats going on! All i do is keep topping oil abd radiator up and i can go months without doing that too. I really cant get my head round what tne problem actually is but my gut feeling is a crack in the head but again i have no overheating, no loss of power , in fact last mot the guys at the garage said it pulls really well , better in fact than a few others they mot!

most people dont do a full flush of the cooling system which includes draining the block thus leaving 1/3rd of the contaminated coolant in the block to contaminate the fresh stuff. they only drain the rad and heater matrix if you are lucky

I wouldn't mind Lee , but local garage have flushed it a few times , well aware of the problem , so pretty sure they have done a ' full ' flush ( but suppose it can't hurt to do it again except the bloody mess! )

How do you do a full flush?
I'm getting all the belts done on my new truck and was gonna do the coolant as well

drain and flush the rad block and matrix in both directions

Could this be contamination from the oil cooler? (apologies if that's not it's correct title!)

I had exactly the same with my wife's audi tt, and turned out the heat exchanger was leaking oil into the coolant. I found this out after 4 full flushes... no mayo on the oil filler cap or dipstick, but oil residue in the coolant that would eventually start to look like chocolate milkshake.

no that is air cooled

@123hotchef is a 2009 plate oil cooler air cooled? I know a classic is but is the DiD engine a different layout?

no idea mate never looked that closely at one

@123hotchef Mrvandangos is a new shape, so he would need to check the layout of the cooler pipes I think

Oh hang on .... I need to read more thoroughly ...its RichT who has the problem... oops , my bad!


Should have gone to specsavers!!

yeh it was deffinaly a classic because I mentioned the drain plug

Quote: 123hotchef wrote in post #7

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drain and flush the rad block and matrix in both directions

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I can do a how too for the forum I even have pics some where