Hi, I have a 2011 E350 bluetec with 127k on it. Since last oil change about 3 months ago I have a check oil on next refueling message. I have not detected any oil leak. Can't be oil evaporating in summer? the dealer have fixed a pricey oil leak previously but that one was visible. Pricey just because the faulty piece of plastic was in the middle of the engine. Let me know if you have any ideas. Thank you
All engines use oil - they burn it, they leak it and expell it through the breather. Some engines use a lot, some engines use very little and some seem to use none at all.
Mostly those engines that seem to use none are in fact using some but the level doesn't go down because oil contaminants bulk up the oil - condensation, combustion by-products and a small amount of fuel.
During hot weather and the longer journeys the average driver does during the summer months, some of the contaminants will evaporate fairly quickly making the oil level drop relatively suddenly.
SOURCE: 2004 buick regal evaporative emission control system leak gross l
First thing to check is the gas cap, make certain it is tight and the cap seal is not damaged or cut. In many cases this is the root cause for the P0455.
If that checks good, you want to check the vacuum hoses from the EVAP purge solenoid under the hood, all the way back to the EVAP canister. Make certain all are connected and not damaged or cracked.
Let me know.
Regards,
SOURCE: 1999 lincoln navigator obd code p0455
Either the fuel cap, or the evap solenoid on the charcoal canister. I'd start with the fuel cap.
SOURCE: OBD codes 442 & 455
Check all of your EVAP lines and the charcoal canister. Also check the lines and overflow line from the gas cap to the gas tank.
SOURCE: Evaporative Emission System codes
check ur gas cap for tight and proper seal that is the most common problem for the the evap codes if cap is good check fuel and vent lines for damage or leaks from gas cap under vehicle up to engine compartment
SOURCE: code po442 Evaporative emission control system
You can inspect the hoses on the EVAP system for cracks or broken connections, but a smoke test that fills the system with actual smoke is the correct way to check for a leak. The leak can be as small as .040 inches.
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