? on oil fitters....

FrankChastain · 10-07-2012, 09:01 AM

Thanks guys for the comments. One reason I posted was I have noticed on my wife's TrailBlazer, straight line six, is sometimes you hear a nock or bump when you start the car up, not it the morning, but other times. As I understand there is a valve, in the filter, that keeps oil from draining out of the block so to have oil in the block for start ups. This is what I understand. The engine never did this until about 3 or 4 changes ago. I change the oil and filter every 3000 miles. Please correct me if wrong.....and again thanks..frankchastain

Please keep in mind this is a personal use car.....

SSDiv6 · 10-07-2012, 06:22 PM

Quote:

Originally Posted by FrankChastain

Thanks guys for the comments. One reason I posted was I have noticed on my wife's TrailBlazer, straight line six, is sometimes you hear a nock or bump when you start the car up, not it the morning, but other times. As I understand there is a valve, in the filter, that keeps oil from draining out of the block so to have oil in it for start ups. This is what I understand. The engine never did this until about 3 or 4 changes ago. I change the oil and filter every 3000 miles. Please correct me if wrong.....and again thanks..frankchastain

Please keep in mind this is a personal use car.....

You are referring to the bypass valve.
Each car manufacturer has a specific setting for the bypass valve based on the engine design.
The worst offender of any oil filter is Fram; I stay away from them.
The best built and design oil filters are Wix (NAPA brand), Baldwin, Hastings and Amsoil.

Tim H · 10-07-2012, 08:01 PM

Anti drain back valve,allegedly developed to correct the infamous cold piston slap in millions of GM 3.1 litres back in the early 1990's.

Glenn Hayes · 10-07-2012, 10:55 PM

All I will use is Wix.

10-07-2012, 09:01 AM	#1
FrankChastain Senior Member Join Date: Mar 2009 Location: Trussville, Alabama-Originally from Vidalia,GA Posts: 642 Likes: 9 Liked 3 Times in 3 Posts	Re: ? on oil fitters.... Thanks guys for the comments. One reason I posted was I have noticed on my wife's TrailBlazer, straight line six, is sometimes you hear a nock or bump when you start the car up, not it the morning, but other times. As I understand there is a valve, in the filter, that keeps oil from draining out of the block so to have oil in the block for start ups. This is what I understand. The engine never did this until about 3 or 4 changes ago. I change the oil and filter every 3000 miles. Please correct me if wrong.....and again thanks..frankchastain *Please keep in mind this is a personal use car.....* Last edited by FrankChastain; 10-07-2012 at 06:22 PM. Reason: put in in the block

10-07-2012, 08:01 PM	#3
Tim H VIP Member Join Date: Jan 2007 Posts: 1,044 Likes: 1,094 Liked 485 Times in 160 Posts	Re: ? on oil fitters.... Anti drain back valve,allegedly developed to correct the infamous cold piston slap in millions of GM 3.1 litres back in the early 1990's.

10-07-2012, 10:55 PM	#4
Glenn Hayes Member Join Date: Feb 2009 Location: Weeki Wachee, Florida Posts: 348 Likes: 416 Liked 18 Times in 12 Posts	Re: ? on oil fitters.... All I will use is Wix. __________________ "Real Race Cars Have Tailgates"