Scottydoggs
Full Access Member
your 100% on track there.
Catch Can for 2006 Tahoe 5.3
- Thread starter Ultimax
- Start date
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Mudsport96
Full Access Member
I have the amazon cheapo ones on both the Silverado and Tahoe.
Tahoes catches about 4 ounces over the 3000 mile oil change interval.
The Silverado on the other hand.... gets about 2 to 3 ounces every tank of gas. So 400 to 500 miles. Depending on highway or town miles. So yeah. They work at keeping the inside of the intake clean
Tahoes catches about 4 ounces over the 3000 mile oil change interval.
The Silverado on the other hand.... gets about 2 to 3 ounces every tank of gas. So 400 to 500 miles. Depending on highway or town miles. So yeah. They work at keeping the inside of the intake clean
As @Scottydoggs mentioned the hoses in that particular kit, I went with some high-quality silicone hose. With winter coming, if you're in a freeze zone, make sure you keep a close eye on it or bypass for the season.
So the design is to burn off that oil, not because it is supposed to, but because it needs to relieve the crankcase pressure. Part of the oil is becoming aerated, and going back into the manifold which makes that dirty, and then into the combustion chamber, (and I wouldn't know if then into the exhaust as unburnt or an exhaust gas).
What it also does, is allow you to monitor your oil level. With a catch-can, you can take that oil and dump it right back into the engine, it's still good oil. With a properly working and monitored catch can, you can remove the "vanishing oil"/(unkown amount of burned off oil) from the equation. Oil is only going to leak out or burn off. If you really want to know exactly how your oil is doing, (with a catch can), you can: do a change, go run it, check your dipstick, and take a picture on your phone. Label it with the mileage and date. When it's time for the change again, dump it back in and check your level first.
I don't do it every time, but I did it the first time, (before I installed the catch can and after). Before the can, I was losing almost half a quart. After installing the can, I lose nothing. Maybe doing this once every year or few changes would be enough to keep an eye on it. I keep all my records in a large folder on my computer. If you do your own changes, and know your putting in the same amount every time, it would be easy to compare all your dipstick levels.
Marky Dissod
Full Access Member
@adriver: don't forget that some of that 'vapor' that the catch can is ... catching ...
would definitely wind up in the exhaust ... and some of THAT winds up in the EGR.
PCV system relieves excess crankcase pressure, AND undesirable combustion products in a vaporous state.
Catch can keeps the engine from combusting anything besides air and fuel.
(Obviously it would do this better if it could somehow discriminate between motor oil and ... NOT-motor oil.)
Without the catch can, EVERYTHING that gets past the piston rings is either in the pan, or in the combustion chamber.
I'd actually analyze the catch can's ... catch ... as used motor oil, to determine if it'd be safe or not
to pour back into the crankcase.
But forced to guess, a wee lil bit of fuel always sneaks pasts the rings and hits a wee lil bit of motor oil.
That's what winds up in the catch can. Why put it back if it was literally trying to deport itself to burn in hellfire?
Seems redundant.
would definitely wind up in the exhaust ... and some of THAT winds up in the EGR.
PCV system relieves excess crankcase pressure, AND undesirable combustion products in a vaporous state.
Catch can keeps the engine from combusting anything besides air and fuel.
(Obviously it would do this better if it could somehow discriminate between motor oil and ... NOT-motor oil.)
Without the catch can, EVERYTHING that gets past the piston rings is either in the pan, or in the combustion chamber.
I'd actually analyze the catch can's ... catch ... as used motor oil, to determine if it'd be safe or not
to pour back into the crankcase.
But forced to guess, a wee lil bit of fuel always sneaks pasts the rings and hits a wee lil bit of motor oil.
That's what winds up in the catch can. Why put it back if it was literally trying to deport itself to burn in hellfire?
Seems redundant.
Good mod, you don't want engine oil in the intake manifold; it lays there in the low spots then flows toward the intake valves where it starts entering the combustion chamber
This creates coking/carbon deposits on the valve face, the combustion chamber of the head & eventually limits the storage of lubricant in the oil control rings as they get gummed up with carbon deposits
Your engine will gradually start burning off this mess once you start keeping that oil out of the manifold, so your compression will recover & your oil control rings will start performing better; after awhile this will reduce your oil consumption & increase the life of the engine
Cheap mod with only an upside
This creates coking/carbon deposits on the valve face, the combustion chamber of the head & eventually limits the storage of lubricant in the oil control rings as they get gummed up with carbon deposits
Your engine will gradually start burning off this mess once you start keeping that oil out of the manifold, so your compression will recover & your oil control rings will start performing better; after awhile this will reduce your oil consumption & increase the life of the engine
Cheap mod with only an upside
