Which oil for 2.4 20v jtdm - Alfa Romeo Forum
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(Post Link) post #1 of 9 Old 22-06-13 Thread Starter
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Which oil for 2.4 20v jtdm

Hi there.Just not sure about which oil to use on my 159.Last time i used Liqui Moly 5-40 but since the change ive noticed that im having regens more often with a same driving habit(80% freeway- 20 city).Before oil change dpf was regenerating at approx. 300 km of driving now it came down to 160-170.im thinking whether is possible that that is from the oil since it doesnt say on the sticker anything about Dpf,just says for petrol and diesel vehicles.I know that Liqui Moly is good quality oil,but not sure if my Alfa likes it.Previos owner used Selenia wr 5-40,so im thinking to get back to that.Otherwise 7000 km with Liqui and not a drop of oil missing,which is good,just worried about dpf and clogging and if oil has got something to do with it.Thanks
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You need to have 'low saps' (low ash) oil, especially with he DPF, it reduces the deposits on the DPF (that will block it!), normal oil will give you DPF problems. Should be ok if it is approved alfa, fiat or GM ( for their CDTi).
Using Mobile 1 New life myself (one of the quality oils that was on offer).
I know mine is only a1.9,(one less cylinder), but only regens every 1,200km. 300km sounds far too much, might be worth getting it a proper regen with some wurth DPF cleaner in, but you may have other issues.

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You need an ACEA C3 spec 5W40 synthetic.

Which Liqui Moly did you use?
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Quote:
Originally Posted by David C View Post
You need an ACEA C3 spec 5W40 synthetic.
actually I think the book spec may only be an ACEA B4 spec....... which may be part of the problem...!
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Quote:
Originally Posted by Alphataurus View Post
Quote from producer:
"5w40 PD ACEA A3/B4 (07) Fully Synthetic Engine Motor Oil for Diesel engines is a fully synthetic motor oil for petrol and diesel engines in passenger cars and light commercial vehicles. This oil can be applied in cars equipped with catalytic converters, turbo charged engines, soot/diesel particulate filters and/or direct fuel injection systems. 5w40 PD ACEA A3/B4 (07) Fully Synthetic Engine Motor Oil for Diesel engines contains less phosphor, sulphur and sulphated ash, so exhaust gas treatment systems (soot / diesel particulate filters and catalytic converters) are prevented from blocking (known as ‘mid SAPS’ technology)"
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(Post Link) post #7 of 9 Old 23-06-13 Thread Starter
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I used to have regen on 300 km with selenia, with liqui moly even on less 160-70 km, once I had after driven just 70 km in city..which might be good since it can never get clogged but worried maybe for the consumption which is about 10l/100km which doesnt really bother me, since it pulls like a train and im having a 'heavy foot'.
The oil that I used is Liqui Moly toptech 4100 5-40..says is fiat approved but still doesnt anything about Dpf.
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Read this, and says suitable for cars wit soot filters, ie DPFs, so should be ok.
http://www.liqui-moly.de/liquimoly/p...oiladb=web.nsf

If you are still concerned about the DPF, get someone to hook it up to a multiescan and can measure you pressure differentials and tell you how clogged it is.
Alternatively just drill it out ( depending on your local laws!)

Last edited by giblets46; 24-06-13 at 07:19.
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(Post Link) post #9 of 9 Old 03-07-13 Thread Starter
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Anyone heard of Martini oil??? My mechanic Alfa specialist recommended me this on, never heard of it.
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