When I changed my oil 1500 miles ago I noticed gas smell in the old oil.

I decided to check my oil level recently at 1500 on the new(er) oil and a strong smell of gas was noticed, and the oil was darker than expected.

I am a very conservative driver, no heavy foot at all unless trying to avoid accidents of any kind.

I have an 04 AT RWD sedan 189k miles. everything is stock.

been using mobil 1 full synthetic high milage, sometimes i'll put a bottle of lucas fuel injector cleaner in the tank maybe 2 times a year.

Anyone have any ideas of what is going on?

I was recently experimenting with lower octane gas and I didn't get any pinging but I did lose power/acceleration. I recently went back to 91 pure gas (no ethanol)

I was planning on using some fuel injector cleaner like Redline, lucas, or Techron as well as switching to Pennzoil Platinum (has a $25 rebate for 2 - 5 quart purchase) to see if I can remedy this "oil dilution".

Any advice or input is greatly appreciated. Thanks in advance.

 

I kind of suspect the Coil plugs and spark plugs may be the problem?

I'm not getting any misfires or codes, but I think the previous owner (brother and his mother in-law) never changed the coil plugs.

Maybe I'm not getting a good enough spark for a complete burn/combustion.