my girlfriend have a 1998 Sienna. Her dad have to add engine oil every week. He think there might be sludge problem. How do i look for signs of sludge?

 

i'm no mechanic, but if he has to keep adding oil, that means it is burning oil right? he should check the color of the exhaust, i think if it is blue, he is burning oil.

if it was sludge, the engine would slower, weaker and sluggish. and it wouldn't be an issue so long as it was changed on a regular basis.

anybody verify what i have just said make sense?

 

Verification.

From what I know that sounds right.
Not a mechanic either though.

 

he said the car doesn't feel weak or sluggish.
my mechanic friend look under the car and can't find any oil leak. So we assume the car is burning oil. The sienna is 1998, he said just drive it until it won't run any more.
i look at the engine, it is dirty like the pic on the left.(not actdural pic of the sienna).


this cound have been prevented with regular oil change.

 

Didn't Toyota recently have a massive recall addressing this exact issue?
http://www.consumeraffairs.com/news0...ettlement.html