BriinumsBo
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I`m not sure if there will ever be a good answer but maybe there is some technical document proof..
I know the catch can removes a lot of mess from the intake, but isnt the oil good for valves and pistons? After 15k kilometers with the catch can I think the valves god louder :/ And maybe there is some piston slap (haven`t sourced the problem yet). I`m just wondering and googling and never found an answer..
I`m really considering to ditch the can :roll:
this is from Corvette forum:
I know the catch can removes a lot of mess from the intake, but isnt the oil good for valves and pistons? After 15k kilometers with the catch can I think the valves god louder :/ And maybe there is some piston slap (haven`t sourced the problem yet). I`m just wondering and googling and never found an answer..
I`m really considering to ditch the can :roll:
this is from Corvette forum:
I have to agree here!!In fact I believe it is doing the Engine a Dis-Service!! In the old days of leaded fuel and No PCV system's, we were Lucky to get 50-60,000 miles out of valves and guides,And Really lucky to get 95-100,000 miles out of a set of rings!!!And then it was a sure bet that there were 2-3 cylinders tapered and you would have to bore it and get a set of pistons too!!Hardly any upper cylinder lubrication except a little lead, If you were a Car Buff,then you may put a few ounces of Marvel Mystery oil in every tank of gas for upper cylinder lubrication religiously and get 100,000 plus out of your valves and guides and maybe 150,000 out of your rings and pistons!!!My Grand Daddy and my Dad were Machinist and Fanatic's about upper cylinder lubrication, and I believe they were 100% Correct!! Heres Why!!I'm Old enough to remember when Cars didn't have a PVC system,just a Breather Cap and a 1 inch tube running from the back of the intake valley to just below the oil pan!! Since PVC systems have been used, engines have been lasting longer!!More Miles with less repairs!! Most all vehicles now days will get at least 100,000 plus out valves and guides some even as much as 200,000-300,000 miles!! My wifes 4.3 Jimmy has over 245,000 and has never had a head off of it, my daughters Z-71 had 196,000 on it and had a head gasket start seeping so we pulled the heads and I was amazed that I could still see the cross hatching in the cylinders!!!We put H/gaskets on it and it's hook'n down the road!! That wouldn't happen in the old days!!!
I'll have a few onces of Upper Cylinder Lubrication per oil change, Thank You!!
I Agree, We used to use Marvel Mystery oil all the time, (40-50 years ago) in fact I still have some. They even used to make an injector plate that mounted between the Carb and intake manifold. Gave better gas mileage and a lot less upper cylinder wear,
There is no actual data to indicate the catch cans either HELP OR HURT engine life or performance.
No company has any documented testing of validation of catch cans.