Fuel in oil

[Fbear]

I was wondering with modern cars is fuel dilution in the oil still a problem or is it a thing of the past?

 

[L_Sludger]

It's an issue with very short trip drivers because cars run excessively rich to warm up quickly, thanks to emissions mandates.

 

[21Rouge]

Originally Posted By: L_Sludger
It's an issue with very short trip drivers


Cold weather idling and DI engines are notorious for dumping fuel into oil.

 

[mechtech2]

Even in the past, it was kind of a thing of the past.
Nowadays, it is rarely an issue unless a part is broken.

 

[2003f7]

my cars see only very short trips. I have had so much fuel and water in the oil that the oil level has gone up!!! That is the reason I will not go longer than 3 months on a OCI

 

[Panzerman]

Both our cars see alot of short trips. Thats another reason I like a little heavier oil than reccomended. Fuel dilution, long OCI and 5w20 is scary to me.

 

[Nederlander75]

Perhaps new emissions tuning using extra fuel (rich tune) to light up the cats to burn off the "emissions".

 

[Frbl]

Originally Posted By: 2003f7
my cars see only very short trips. I have had so much fuel and water in the oil that the oil level has gone up!!! That is the reason I will not go longer than 3 months on a OCI


How is your exhaust system? One would expect that with your short trips the exhaust would rust more quickly from the water not being burnt off completely.