Gas Smell in Oil?

Just changed my oil at 6k mi/6 mo. -- 2018 OR at 92k mi. -- and the oil had a very noticeable gas smell - oil smelled like gas at the last change too. I've looked over a few other threads and don't see any definitive answers. I commute 25 minutes each way crosstown (avg 40 - 50 mph) 5 times/week to work. 45 minutes to Dallas hwy (70 - 80 mph) there and back on Saturdays. Most other trips are short around town, so I'm hoping it's just that. Engine runs smooth, no idling issues.

Anyone have any thoughts?

(waiting for the inevitable "Normal" from Whippersnapper - hopefully)

 

Sometimes a small amount of gas can get passed the piston rings and end up in the oil when the rings get worn down but it will evaporate when at operating temp. If it's a strong smell then it could indicate a rich fuel mixture which could be a bunch of things faulty injector, dirty MAF sensor, faulty O2 sensor, coolant temp sensor not working properly, damaged piston rings which is rare. Have you seen a drop in your fuel mpg recently. Pull the codes via obd and see if you have any pending codes and look at air fuel ratio also if the coolant level is good.

It could also occur when you drive on I-635 and I-35 in Dallas. I'm not sure HOW it would happen, but those roads are notorious for causing a myriad of issues with cars. Usually they just cause road-rage, but they've been known to cause mechanical issues too!

 

LOL -- yeah, but 75 is worse -- I've got an OBD reader, so I'll have a look. Can't say I've noticed a drastic change in mpg, but I'll see about the codes -- appreciate it.

 

just checked my codes -- doesn't look like I have any. Is this a big enough of a problem where I need to take it in to have a look?

 

My thinking is if you have several short trips before oil change, then that might explain the fuel smell. Especially if the engine doesn't have a chance to warm up completely.

 

Most of my trips are about 20 - 30 minutes, crosstown. But two days ago I had an hour-long trip both ways and haven't driven my car since.

 

All of those seem like they should be long enough to get the oil temperature high enough to boil off fuel vapors.

 

I’m not being a particularly good diagnostician but what I would do is shorten the oil change interval to 5000 next time and get a sample analyzed by a lab like Blackstone. They’ll come back with a fuel percentage among other metrics which I think would be cool info to have.

 

went ahead and changed the air filter (dirty) and cleaned the MAF sensor, so we'll see if that helps anything -- thanks for the feedback guys

 

I would change the oil right away.. number one killer of oil is fuel....
Any combustion engine small amount of fuel will leak into the oil, thus changing the oil frequently is the solution and not every 10K....