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Senin, 05 Juli 2010

Engine oil confusion - Selenia 5W40 for diesel engine

I got my car serviced today. Since I requested Selenia semi synthetic oil this time around, they have used that.

In the bill, the item is described as Fiat Diesel Engine Synthetic Oil - 5W40 I was surprised to see this since the car is a 1.2 Petrol. (Palio 1.2 NV) Could this be a problem? Could there be two different versions of 5W40 for Petrol and Diesel?
Sunil
Palio 1.2 ELX - 54000 Kms
Punto MJD - 10000 Kms

I checked Selenia web site and found that they recommend Selenia 20K oil for Palio 1.2 8V - that is SAE 10W-40, ACEA A3, API SL/CF. This, seems to be usable for both petrol and diesel.

I have filled WR 5W40 instead. (SAE 5W-40, ACEA B3/B4, API CF)

Since it doesn't show API S rating, I guess it is not really suitable for Petrol engines... or is it?

Selenia' recommended oil for 1.3 MJD engines is WR 5W-30 (SAE 5W-30, ACEA C2) but here all TASS centers seem to use WR 5W-40 for bith petrol and diesel engines! As you can see above, it is API CF and so not really suitable for Petrol engines.

Do I need to flush the engine oil and fill the correct one or will it be ok to run the 1.2 8V motor with a 5W-40, ACEA B3/B4, API CF engine oil?


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