Fresh Diesel oil black after 10 miles

[Welly]

The oil was changed on the C4's 1.6HDi last week, we had it red-hot first and left it draining for eleventy hours but after just 10 miles it was as black as it was before

If I could get the low ash C2 stuff cheap enough I'd run a few 'wasted' oil changes through it.

[steve_earwig]

I thought that was more-or-less standard on a diesel, especially one that's still got an EGR valve and a sump drain that isn't actually at the bottom of the sump...

I guess that also precludes flushing it with something cheap and nasty from Lidl

[OllieNZ]

Surely cheap stuff would be okay for a few waste oil changes? I've switched mine to the cheaper fully synth stuff since removing the dpf.

[Bailes1992]

Welly I can get you 20L of Chevron Havoline Supreme 5w30 fully synth low SAPS stuff for £40 if you want it. It meets A5/B5 so exceeds what Citreon ask for, and Ford! It'd be fine in your T5 too. They love it in America.

Diesel oil always goes black straight away. It's due to the EGR and the soot.

My Mondeo used to stay much cleaner without an EGR.

[rwb]

On my 406 it was about two changes after blanking the EGR that it started keping a golden tinge. The 407 is still always black though, even with the EGR blanked.

[Welly]

I wonder if the type of Dizzle fuel you use affects the blackness of the oil? I guess it does.

To be honest I'm getting the impression the 1.6 is a cracking little engine IF you remove all the emissions crap bolted to it. As and when finances allow I'll look at removing the DPF, eoloys and EGR crap altogether.

Started looking at how to change the engine's Air Filter because you can't actually see the thing and WTF they couldn't make it more awkward if they tried

Hey, we found out when doing the oil change that the factory fit a Stainless Eggsauce to these cars. I say stainless, it's the cheapest grade possible and is now rusting

[Welly]

Welly I can get you 20L of Chevron Havoline Supreme 5w30 fully synth low SAPS stuff for £40 if you want it. It meets A5/B5 so exceeds what Citreon ask for, and Ford! It'd be fine in your T5 too. They love it in America.

Diesel oil always goes black straight away. It's due to the EGR and the soot.

My Mondeo used to stay much cleaner without an EGR.

I thought it needs to be 'C2' spec oil?

[Bailes1992]

ACEA C2 is a 'mid SAPS' DPF friendly oil. Doesn't have anything to do with the HTHS of the oil.

A5/B5 is a new classification that offers fuel economy benefits but may not have the HTHS that some engines require.

[jasper5]

Started looking at how to change the engine's Air Filter because you can't actually see the thing and WTF they couldn't make it more awkward if they tried

The easiest way to get at the air filter is this....

Take off the wiper arms and remove the shelf which fits side to side below where the wiper arms fit.
It isn't that difficult.

[Welly]

The easiest way to get at the air filter is this....

Take off the wiper arms and remove the shelf which fits side to side below where the wiper arms fit.
It isn't that difficult.

Bugger I had all that stuff off last weekend checking something else, the upper plastic guard was a pain because it didn't want to locate into a grove at the bottom of the windscreen, took a few attempts and then I was left with trying to tuck that 'blanket' down to the bulkhead. Thanks for the tip, it makes sense now, I did see a guide on youtube showing unclipping the fuel lines etc didn't fancy that.

[PeterN]

Diesel lubricant is a high detergent oil so going black shows its doing its job, the real test of carbon saturated oil is if it stains your fingers, if you can wipe it off it should be OK.

Peter

[KozmoNaut]

Carbon isn't that much of a worry, it's quite slick and not very abrasive. It just happens to color things very black ;-)

[OllieNZ]

Just be careful taking the air box lid off I managed to crack my screen doing mine. A bit of glass cleaner helps get the scuttle panel to clip back in.

[Doggy]

FWIW my oil always goes black pretty much straight away and its years since it was afflicted by dpf or egr.