My dads 2015 Honda CR-V AWD with 140,000 is due for an oil change he changes it every 7-8,000 miles every 3 months with full synthetic oil and does all highway driving. However he just checked the oil just now and the dipstick read it’s not full only between half and 3 quarters so it’s gotta be burning oil. Because we couldn’t find any leaks. He will be getting his oil changed this week but why would this be happening it’s not the 1.5 turbo it’s the 2.4 earth dreams engine. What’s causing this? What could be done?
If the dipstick reading is only going down 1/2 quart or less in 7K to 8K miles that's not very severe. (By the way oil changes every 5K miles would be better for the engine.) You might try changing the PCV valve.
Yep that's what I thought and from now on he will be changing the oil every 5,000 miles
However he just checked the oil just now and the dipstick read it’s not full only between half and 3 quarters so it’s gotta be burning oil.
When did he check the oil? Engine hot or cold? Was it on a level surface?
The engine oil check procedure IS mentioned in the CR-V owner’s manual.
Did he check the oil following that procedure?
He checked it last night engine was cold on a flat level surface. plus we always thought oil check procedures were the same as every vehicle which is at the full line no more no less.
The owner’s manual recommends you check the oil when warm. Like I said, check it using the specific procedure in the owner’s manual.
The PCV valve is a vacuum actuated valve that relieves blowby pressure in the crankcase and recirculates it back to the intake manifold. It will be located between the valve cover and the intake manifold, usually in a large hose. Since on newer cars they are usually made of plastic and fairly cheap, I replace mine at each oil change. If yours is old, they get blocked up and force the engine to use more oil.
Like @chucktobias said, get a new PCV valve. Most people ignore this item. Especially on a 7 year old car.
what is a PCV valve and what does it do?
full line no more no less.
Nope.It's not a "full" line. It's a "maximum" line. Oil level anywhere in the hatched area (or between the holes, depending on your stick) is fine.
