Oil in coolant tank!

4.2 V8 40v biturbo - 450 bhp
4.2 V8 40v biturbo - 480 bhp (plus)
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AceM89
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Oil in coolant tank!

Post by AceM89 » Mon Feb 12, 2024 7:54 pm

Hi everyone

I've been a long time reader of the forum and this is my first post.

Just discovered oil in the coolant reservoir tank on my 2004 RS6. Tried local garages but nobody wants to touch it or has the know how. Any recommendations on garages around bedfordshire?

I think it's the primary oil cooler that sits above the alternator.

Any ideas or help is appreciated

Thank you

steve2003rs6
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Re: Oil in coolant tank!

Post by steve2003rs6 » Mon Feb 12, 2024 8:59 pm

That doesn’t sound good mate.
I am sure someone on here (more technical than me) will respond.

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Shoppinit
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Re: Oil in coolant tank!

Post by Shoppinit » Mon Feb 12, 2024 10:58 pm

You’re not too far from MRC in Banbury.

Might be the heat exchanger on the oil filter housing. It’s probably the least worst case.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

AceM89
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Re: Oil in coolant tank!

Post by AceM89 » Mon Feb 12, 2024 11:20 pm

Thanks guys

I'll give them a shout, and keep you updated on what they find

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