Just wanted to let you guys know, in case anyone is using K&N oil filters on their CTD truck.......Cummins will and can void warranties for using K&N oil filters, or any filters actually, that do not have anti-drain back valves.

K&N Oil Filter:
HP-4003 Product Specifications
Product Style: Oil Filters
Height: 7.23 in (184 mm)
Outside Diameter: 3.69 in (94 mm)
Thread Inside Diameter: 1.00000
Thread Number: 16.00000
PSI Relief Valve: None
Anti Drain Back Valve: No
Style: Canister
Weight: 1.5 lb (0.7 kg)
Product Box Length: 3.81 in (97 mm)
Product Box Width: 3.81 in (97 mm)
Product Box Height: 7.23 in (184 mm)


Just a heads up on some info that I just found out about!

 

i thought they had a drain back valve.? thats all ever used because of the nut on the bottom

 

what Filters do have this? Mobile?

 

I never use those grocery store filters. Do yourself a favor and get a good quality oil filter. Your engine will thank you. Nothing but FG Stratapores on my truck.

 

Some K&N oil filters have an anti-drain back valve........and the oil filter listed on their website clearly states this specific oil filter does not have this feature.

I know Fleetguard and Amsoil Ea filters have the ADBV feature in all of their oil filters, as a standard.

 

I would not put a K & N product on my lawn mower.

I get my filters at a cummins dealer in my area or order from Geno's.

 

thanks for the info. i guess more expensive isnt always better

 

What is an anti-drain back valve?

Nick

 

The anti-drain back valve reduces the dry friction or solid friction time between working parts of the engine as protecting from the oil flow towards the pump and accelerates the oil flow into the working elements during the engine start, especially after a long break.



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Anti-Drain-Back Valve Diaphragm – In the interior of the filter assembly mounted to the base surrounding the outlet orifice is a flexible gasket that lies on top of a series of holes where the oil enters the assembly. The gasket acts as a type of one-way valve that only opens to let oil in through the holes to fill the assembly. When oil pressure drops (engine is turned off, etc.) the gasket returns to cover the holes preventing the oil in the whole assembly from leaking into the engine and down into the oil pan. The gasket is generally called an anti-drain-back valve.

 

What filters have them?

Nick

 

I would like to know why you would need an anti - drainback valve on an oil filter that is mounted with the holes on top? It's not going to syphon and the oil isn't going to run up hill.

 

thats a good question. that may be why k&n dont have one. May not be needed? just guessing

 

I just changed my oil and I could swear that my Fleetguard Stratapore filter did not have one

 

How is oil going to drain out of a filter mounted straight up and down...???

 

It's not draining out of the filter that's the issue here it's draining out of the engine back through the filter that's the problem. Also, any particles that are in the filter could be flushed back into the pan if flow were allowed to reverse through the filter. I agree that there's not a lot engine above the filter but it's enough to allow Cummins to deny warranty if the filter doesn't have an ADBV.