
Originally Posted by
dvldoc
I really don't speak Tagalog but I will try to reply.
The extended oil change intervals does not come from the extra oil capacity, In my case it's only about 2 liters more total, the stock filter is no longer in place with this system. And frankly it's very common to have these set up's on diesel engines.
Even the none synthetic fiber Fleetguard filters hold 4 to 5 times more debri without become clogged vs a standard filter. This is a giant advantage and also give you extended oil life. A basic Fleetguard is good for a easy 10000 klm to 15000 klm on good old dyno oil before they need to be replaced and you will still have good engine oil analysis.
No crackcase modification needs to be done to utilize this, The other facts are these filters also flow way better than your OEM or filters so even less stress on your oil pump and better oil pressure, They have real anti-drainback valves not the poor fitting cheap ones found on many filters. This keeps everything working as it should.
Works just fine on 1kzte engines here people have imported in and modified there Toyota 4runners with. Same basic set up as the QD32.
Here we do engine oil analysis, you drain out a few ounces mail it off and get it back and it will tell you everything you need to know about how well the system is working. The 1000's and 1000's that have been done on bypass systems show one thing, The oil if far cleaner. It's the reason why they are used in Fleet service vehicles and why people adopt these to personal vehicles. You can add safely up to 2 liters of extra oil capacity to almost any vehicle.
There are some people going 40000 miles to 50000 miles on full synthetic with this set up. That's 80000klm and the oil specs still come back good.
Here is the biggest reason for these systems it' simple it's all about engine wear. The ability to efficiently filter below 5 microns equals 4 times less engine wear. That's why big rigs go millions of miles on there motor.
Also many hear do the same thing with the fuel system as well, we use a 2 micron secondary filter. These will dramatically extend the life of your diesel nozzles and injector pump.
You can also just keep your factory filter in place, and add the bypass filter, your talking less than a liter in extra oil capacity added to your system. Also these act a a oil cooler because they are removed from direct engine heat. Increasing oil capacity is a good thing and does not harm your engine or how your crankcase ventilation system works. I use a oil catch can on mine to keep thing even cleaner.
This works especially well on old dirty non common rail diesels why because you make more soot, a great deal of that winds up in your oil and its in the 20 micron and less catagory.
[SIZE=3]The Dangers of Soot[/SIZE]
The combustion process of diesel engines creates soot. After fuel is injected, combustion occurs with elevated soot levels as a byproduct of the process, and the combustion particulates become trapped on the exposed oil film. The rings wipe the particulates into the oil and the fine particulates aggregate, increasing levels of soot in the oil.
Oil with dispersant additives will generally keep soot in the range of 0.002 to 0.5 microns in suspension; detergent additives prevent the build-up of sludge and act as an acid neutralizer, keeping soot in the range of 0.5 to 1.5 microns in suspension. These anti-wear additives work by providing a sacrificial chemical-to-chemical barrier. As the amount of soot suspended in the oil increases, the performance of these additives decreases. These ranges of particle suspension reveal how important bypass filtration is - and the efficiency of that filtration - to providing the lowest diesel engine wear rates. Yes, wear rates.
Soot Causes Wear
As an oils soot dispersant additive level increases, wear reducing additives become less effective. This creates a direct linear correlation between wear and soot concentration; the higher the concentration of soot, the higher the level of wear. Todays oil manufacturers are extending oil life by holding higher concentrations of contaminants, including soot, in suspension in the oil. They are also increasing fuel economy by reducing oil viscosity and oil film thickness. Therefore, even smaller sized contaminants are becoming critical in items in terms of creating wear. This further necessitates the use of bypass filtration, especially in diesel engines.
Soot is about 2 hardness points less than a diamond, it's like microscopic sandpaper inside your engine and OEM and VIC are not going to do much to cut it. This leads to all kinds of issues and lost compression.
Anything you can do to properly filter your engine oil you should. There is two basic principles in filtration. OEM and Fleet.
OEM= good enough for a average engine life. Manufactures do not want your engine lasting 3 or 4 times longer because they have to sell cars.
FLEET SERVICE= Lowering maintenance cost with providing the longest engine life possible.
SORRY for being so long.