i30 Owners Club

GOT PROBLEMS OR ISSUES? => DIESEL => Topic started by: chrizer on January 29, 2025, 00:58:53

Title: Oil level Increasing
Post by: chrizer on January 29, 2025, 00:58:53

My 2011 fd Diesel is increasing in oil level. My assumption is it is filling with diesel. The oil is very thin. I have no fault codes and the car runs and drives ok. Anyone got any ideas?  I have re-sealed the injectors with no fix.  My. ext thought was high pressure fuel pump??  Any help is greatly appreciated.

Title: Re: Oil level Increasing
Post by: BrendanP on January 29, 2025, 12:00:51

I've read this happens if the car tries to force a DPF regeneration but it gets interrupted by repeated short journeys. Are you seeing a big drop in fuel economy as well?

Title: Re: Oil level Increasing
Post by: chrizer on January 30, 2025, 10:37:04

I do not think that my model has a dpf??

Title: Re: Oil level Increasing
Post by: BrendanP on January 31, 2025, 16:56:49

I had a UK spec 2011 diesel and it definitely had one. If you go to www.partsouq.com (http://www.partsouq.com) and enter your VIN number, then search for 'particulate' that should tell you whether or not your car has one.

Title: Re: Oil level Increasing
Post by: Cry-30 on February 03, 2025, 20:20:05

It has a DPF within the CAT. Thinning oil is 100% diesel getting in it.

Get the oil changed and lob in some Archoil 6900   :link: Archoil AR6900-D Max Advanced Diesel Fuel Synthesis (https://www.powerenhancer.co.uk/product/archoil-ar6900-d-max-advanced-diesel-fuel-synthesis/)

Increase the cetane will also increase the exhaust temps and will help burn off soot in the DPF and EGR etc.

Title: Re: Oil level Increasing
Post by: I30 GD on February 03, 2025, 21:49:33

If it does have a dpf, I would get the values checked on a diagnostic, it may be that the dpf is failing to regen and dumping fuel into the oil.

Title: Re: Oil level Increasing
Post by: Surferdude on February 04, 2025, 09:02:59

Someone else can help out here, but I’m pretty sure we didn’t have DPFs in Australia that far back.

Title: Re: Oil level Increasing
Post by: Surferdude on February 04, 2025, 09:08:43

DPFs didn’t become mandatory in Australia until 2016. FD and GD models didn’t have them.