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OEM oil filter vs. some aftermarket

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Ninja-Boxe

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Discussion starter · #1 ·
So, i changed all the fluid on the new (old) RAV4. Diff, transfer/transmission, engine, brakes, servo, and coolingsystem.

I have read everywhere on this site, how important it is to use original oil filters cause of some valve inside the filter...

So I bought the filter at Toyota service center, and took some Pictures side by side of the OEM vs some aftermarked that was installed on the vehicle.


Here you can see that they (almost) have the same partnumber, but looks very different:
- Different size holes
- Some kind of "neck" in the middle

Image



Here on the next Picture:
- Bigger holes inside aftermarket filter
- Looks like it has some sort of pattern inside aswell
Image



In this Picture you can se the valve Down the bottom (Toyota filter)...
Image


Here is another Picture of the valve:
Image



And last, the aftermarket with just a flat bottom.. No valve..
Image


The aftermarket oil filter was in the car when I bought it... Was driving fine... I really don't think I will notice any change now when I changed it to the OEM filter with valve.... But I'll bet the engine will thank me for it ;)
 
#2 ·
Ninja-Boxe said:
So, i changed all the fluid on the new (old) RAV4. Diff, transfer/transmission, engine, brakes, servo, and coolingsystem.

I have read everywhere on this site, how important it is to use original oil filters cause of some valve inside the filter...

So I bought the filter at Toyota service center, and took some Pictures side by side of the OEM vs some aftermarked that was installed on the vehicle.

The aftermarket oil filter was in the car when I bought it... Was driving fine... I really don't think I will notice any change now when I changed it to the OEM filter with valve.... But I'll bet the engine will thank me for it ;)
Click to expand...
oil filter comparison
 
Discussion starter · #4 ·
Drcoffee. Thank for the post. Will look into that later.

Noel. As far as I know it has something to do with correct oil pressure for the hydraulic valves in the cylinderhead. Or lifters...
Can't remember which one. But on cars with all mechanical valve train it doesn't matter. Such as Honda d16z6 or b16 engines for an example...
 
#5 ·
Filters mounted such that oil tends to drain from them usually incorporate an anti-drainback valve to hold oil in the filter after the engine is shut down. This is done to avoid a delay in oil pressure buildup once the system is restarted; without an anti-drainback valve, pressurized oil would have to fill the filter before traveling onward to the engine's working parts. This situation can cause premature wear of moving parts due to initial lack of oil.
 
#7 ·
Some filters also incorporate a bypass valve in the event you don't change your filter often enough the bypass valve opens when the filter is too blocked to flow enough oil. It's a last resort valve that allows dirty oil to circulate instead of no oil. Guess they figure additional wear is more acceptable that a seized engine.

Sent from AutoGuide.com Free App
 
#8 ·
This is great information. I'll stick with OEM filters when changing oil in this car. My others are so old, im not sure this valve thing was thought of by then.
 
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#9 ·
TurboRA40 said:
Some filters also incorporate a bypass valve in the event you don't change your filter often enough the bypass valve opens when the filter is too blocked to flow enough oil. It's a last resort valve that allows dirty oil to circulate instead of no oil. Guess they figure additional wear is more acceptable that a seized engine.
Click to expand...
Virtually every filter includes a by-pass mechanism, but it is the QUALITY of that by-pass that makes the difference. On some, all that is there is a piece of tin, bent into a slight arc. They get hot, fail, and no further filtration occurs (just cut open a garden variety Fram to see this style). Others use a coil spring, or some other valve type that is more in line with manufacturer or higher recommendation.

Also worth noting is the ability of the filter medium to actually filter particles out of the oil. The synthetic media filters are now proving best by a long shot, and while they are also best at total particle reduction, the synthetic medium of the filter ALSO lasts longer without failure due to hot oil, particle loading, etc., giving one the best of all worlds oil filtration.

Even better than that is a true by-pass system that filters the oil at a higher level than possbile with a stock-type canister. Many diesel enthusiasts are running by-pass filters with synthetic oil and getting VERY long term drain intervals.

AMSOIL General Use Dual Remote Oil Bypass Unit
 
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