If this actually worked to it's claims, it would also reduce emissions by a great amount and the EPA would make it mandatory. As is, it is illegal in many states to modify your PCV system in any way, that's my disclaimer . The primary function of a PCV system is to relieve the crankcase of fumes from blowby of the engine, in which a healthy engine will only leak down a couple of percent, a 25% increase in fuel economy is NOT possible via the PCV system, there is NOWHERE NEAR 25% unburned fuel in the crankcase of a vehicle, even that mosquito killing hooptie you may have passed earlier on today. Obviously the PCV system can't add any more fuel than leaked down. The only thing that this PCV modification could do to improve fuel efficiency is to prevent oily residue from entering the intake manifold, which is one of its claims, but this can be prevented by pulling your screwdriver out, removing the PCV hose from the manifold, then spraying some carburetor cleaner into the intake. Problem solved. Condensation does get into the crankcase, but is only an issue when you first start the vehicle in the morning. Oil has additives that neutralize the acids produced as a by-product from condensation, but the PCV system cannot prevent this, it can only soak up burned off condensation so you can gawk at it, it adds no benefit. The cure for condensation: warm the engine up. It'll burn the condensation off.
You will not believe the sludge and "gunk" that builds up in the jar. I broke an oil pump shaft in an engine with 185,000 miles on it, and when the oil pan was pulled, there wasn't any sludge or buildup. I installed the jar when the engine had about 72,000 miles on it"
As far as the canister, it wasn't sludge and gunk when it entered the canister, it was vapor. This isn't what the canister "caught", but rather what formed after the oil, fuel, and water vapor was trapped within. Condensed water turns oil into sludge. If you trap condensed water in a canister, and trap oil vapor, and fuel, you will turn it into sludge after it sits. But if it burns off in a combustion chamber as intended, they will not form sludge or buildup. This canister simply shows you what the engine would look like if it didn't have a PCV system to vent out these gases and burn it. As far as "sludge" and "gunk" building in the engine, sludge builds up when you don't change your oil as you should. True sludge buildup sticks to the engine, sometimes to the point where it would take a chisel to get off. A 3/8" vacuum operated hose isn't going to suck sludge and gunk off of a connecting rod. Period. Think about this: Gas tanks also contain gas vapor, (notice the shhhhh when you open your gas cap). If the gas (liquid) had dirt in it, would sucking out the vapor do any good? Absolutely not. The gas would hold the dirt in place until it had a place to go (being drained). Detergent oils suspend contaminants so they do not settle on engine parts and form sludge. When the oil becomes saturated with contaminant particles, new particles settle out of the oil onto the internal engine parts. That's what causes sludge, and it's the primary reason that you change your oil. Contrary to popular belief, oil DOESN'T break down, it gets DIRTY. I've put hundreds of thousands of miles on engines and had no sludge too. Know why? I change my oil.
i not sure but i believe its a water and small amount of aclchol mix. Also I could be wrong but he may have gotten better than a 10 percent increase but I know it wasnt any lower than that. Ill let you know what it does for me after its hooked up in my car.
He likely got that increase simply from replacing a clogged PCV valve, routing new hose, and cleaning the intake. A clogged PCV system will kill your gas mileage as the engine depends upon it for normal operation, it's a good idea to clean the PCV valve and port at the intake on every oil change. If you want to do this comparison, do it fairly by replacing the PCV valve, cleaning the intake, and replacing the hose. Then get the mileage written down on a sheet of paper, try and get a couple tanks on there to get an average as gas mileage will fluctuate with weather conditions, driving habits, and engine tune. Then do the same after you add the PCV canister, and drive EXACTLY the same manner as you did before. I'm not saying this PCV modification can't add a little benefit, especially if you live in a moist climate or you just don't change your oil or have a lot of leakdown, but the claims on that website are way overexaggerated. That was my point.
BTW, before PCV systems were designed to recycle fumes through the engine, manufacturers routed the hose to the outside of the vehicle so that the air rushing past could create a venturi effect and pull fumes out of the engine. Same function as the above system you linked, just without a canister. Gas mileage didn't suffer a bit after the changeover to modern PCV systems.
ill do my comparison with my exsiting pcv on my car to show you it works...im not doing my upgrade like the link I gave just hose tline alchol and water mix line hooked to pcv ...by the way my uncle is a mechanic so I doubt it is because he simply cleaned the pcv...it was the mod that did the increase in fuel economy...(honestly I dont really understand why you find this hard to believe that it was the mod that did it but to each his own I guess) 10 percent minimum is what he got jon