Why is my engine oil level going up?
Rising oil levels are typically caused by fuel leaking past the piston rings and diluting the engine oil with gas. Because standard diagnostics often yield mixed results, car owners struggle to pinpoint the underlying issue while dealing with a vehicle they rely on for daily transportation.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Using an OBD scanner to check sensor readings and fault codes
- 2Inspecting fuel injectors and the DPF
- 3Checking for broken wiring or sensor failures
- 4Using fuel injector cleaner
- 5Researching online about whether the issue stems from the fuel pump or injectors
In their words
Unedited, most upvoted first, each linked to the thread it came from.
“Now today I noticed a leak and it appears to be oil mixed with Gas?”source ↗
“I'm at a loss as I don't know much about cars.”source ↗
“My oil level is going up over time.”source ↗
“Unfortunately this is my only source of transportation for work until this weekend. :/”source ↗
“I've been trying to find the cause of the problem for a while”source ↗