Oil catch can yes or no?

[JanS1983]

Oke i noticed that when on idle, she starts to produce blue smoke.

It is not always mostly when idling, that has to be blow by, is it a good idea te add a oil catch can yes or no.

Why not, some say yes and some no, what are the benefits?

[friskyfrankie]

One could always install it but it is always best to find and correct the original problem or at least, find a way to mitigate it.

[Arquemann]

Change your PCV valve / make sure it works properly.
Burning oil is most likely caused by worn valve stem seals or worn piston rings. There would have to be an insane amount of blow by to see blue smoke.
If it's really blow by causing the oil burning, a catch can will help some.

[sly]

Probably not that bad on blow-by. More likely worn valve seals.

+1 PCV valve may be crap. It should block flow one direction (maybe not completely) and pretty much pass everything the other direction.
Definitely make sure PCV system is working right. Then if the smoke doesn't clear up, consider other options.

[gadget73]

What year? If its before 1995, its the valve seals. A catch can won't do anything for that problem.

[friskyfrankie]

I've seen good luck with this product and other they make. I'd do an oil, filter change and give it a shot!

https://www.jbtools.com/bars-leaks-o...xoCT_4QAvD_BwE

[Kodachrome Wolf]

If the valve seals are shot/weak, my usual go to is just using High Mile 10W-40 oil for a bandaid fix.

Friend drives a ‘99 that’ll smoke on take off, or at least used to, when we ran 5W-20 or 5W-30 in it. Consumption was up as well, about a quart every 1500 miles. Been treated to the 10W-40 for the last 50K miles over two years and it’s doing okay. Keeps consumption to about a quart every 5000 miles.