Why is my car burning a quart of oil every 500 miles?
High oil consumption often leads to burning about a quart of oil every 500 to 1,000 miles, accompanied by blue smoke under load and a rough idle. This excessive oil loss prevents drivers from maintaining reliable engine performance without constantly adding oil.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1checking the oil regularly and living with it
- 2Adding almost a quart of oil every 500 miles
- 3Running specialized high-mileage or detergent motor oils
- 4Performing engine cleanings and piston soaks
- 5Replacing components such as the PCV valve, head gasket, valve stem seals, and turbo
In their words
Unedited, most upvoted first, each linked to the thread it came from.
“still after a night of hard driving it almost lost 0.5l of 5w40...”source ↗
“no mayor visible leaks that could leak that much oil and no visible smoke coming out... so yeah i got no idea what to do next...”source ↗
“Lately he's been going through about a quart of oil every 1,000 miles and the idle has gotten rough.”source ↗
“He's not in a position to spend big money on it right now, so I'm trying to give him a straight answer instead of guessing.”source ↗
“Over the past year, I've been dealing with Oil Consumption/Loss. In the past 3 months, I've had blue smoke coming out of my exhaust, never on startup, usually under load or when pulling away from a stop. I'm adding in almost a quart every 500 miles”source ↗
“Following because I’m having similar issues with another Toyota motor”source ↗
“oil is still going missing.. so yeah really lost”source ↗