Drain-back valve on M1 EP filter failed?

[DavidB]

Hey guys,

I installed a Mobil 1 EP filter on my 2003 Mustang V8 a few weeks ago and noticed right away that the drain-back valve is junk. Any time the car sits for about 24 hours or more, upon start-up I hear those knocking sounds that I've only EVER heard right after an oil change. I've been changing my own oil for 26 years and have never experienced this. Also, I live in Phoenix, Az.

1. Could the valve have just failed that fast?
2. Is this common with the M1 EP filter?
3. Do you think AutoZone would exchange it for me or Mobil?
4. If not, can someone recommend another brand of an EP filter? I'm looking to run this oil (M1 EP 10w-30) and filter about 13,000 miles (one year).

Thanks in advance

 

[Jim Allen]

If you can exchange it, go ahead but it may well start working better after more heat cycles and not cause another problem. Or it might not... which is probably the more likely scenario. Normally, the M1s are good filters and one failure does not a bad line of filters make. We dont hear of many problems with the M1 filters. Personally, I would recommend a Fram Ultra, Purolator Synthetic or a Napa Platinum over an M1... mostly because they have a lofted synthetic media. If they won't exchange the M1, cut it open and see if you can find the trouble.

 

[tig1]

I use MC filters with M1 oils for 10K OCIs. A friend also uses MC filters on his Ford van with 5-30EP for 15K OCIs never had a problem.

 

[michaelluscher]

Funny, I had a M1 filter do the same thing on my Villaquest.

 

[Donald]

Originally Posted By: Jim Allen
If you can exchange it, go ahead but it may well start working better after more heat cycles and not cause another problem. Or it might not... which is probably the more likely scenario. Normally, the M1s are good filters and one failure does not a bad line of filters make. We dont hear of many problems with the M1 filters. Personally, I would recommend a Fram Ultra, Purolator Synthetic or a Napa Platinum over an M1... mostly because they have a lofted synthetic media. If they won't exchange the M1, cut it open and see if you can find the trouble.


Maybe asked before, what kind of media does an M1 filter have?

 

[ZeeOSix]

Originally Posted By: DavidB
can someone recommend another brand of an EP filter? I'm looking to run this oil (M1 EP 10w-30) and filter about 13,000 miles (one year).


Fram Ultra would fit the bill pretty good IMO. Go to Walmart and get one for $9.

 

[DavidB]

Thanks guys. I too decided on a Fram ultra if I don't get a replacement for my M1 filter.

 

[tig1]

Why not call Champion labs as the M1 site says to do. Here is a link for the filter warranty.

http://www.mobiloil.com/USA-English/MotorOil/Other_Products/Mobil_1_Oil_Filter_warranty.aspx