MF35 Perkins diesel, spin-on oil filter

Thanks!

Henning

Tom

What's that mean? :)

Which do I use and why?

Thanks!

However, I was hoping for a bit more information on what this bypass stuff is all about. I'm no mechanic, but have been working on my own cars for somewhere around 40 years and never heard of it. Does that mean it's not important for cars - but is for tractors - when two supposedly interchangeable filters are so different?

Any additional info would be appreciated.

Big Dean...y'all out there? Comment?

Thanks!

The bypass pressure is the pressure that oil will run by, not through, the filter when it builds up too much resistance - usually from crud.

This normally doesn't happen if they're changed regularly.

Test: put your hand on the filter after the engine warms up. If the filter is warm, the oil is flowing through it.

There is a difference in filters. There was a website (no longer around) which compared different makes of filters for (I think) a chev. The filtering paper area was the biggest difference - Fram had about half the area that OEM or Wix had. I'm guessing Fram threatened the owner of the site with legal action.

So they sell cheaper!

We've been running the 35's, 135's, 65, 165, 30 and 40 industrial (10 units total) for 25 years now - probably 20,000 hours total on them, with off-the-shelf filters, changed regularly. (every 100 hours.) No problems evident.

The inherent reliabliity of the Perkins engine, regular oil/filter changes, keep the fuel clean - a good recipe for success!

So, now I understand bypass pressure. Seems to me that higher bypass pressure is better, or am I missing something? Lower would imply that oil will bypass with a less serious clog making the filter basically useless. Higher implies that the filter stays in the picture longer. Taking it to extremes, no filter has zero bypass pressure, so flows regardless! :)

Obviously, if you maintain the equipment on a regular basis, it's not an issue.

I have a feeling that it's one of those questions that doesn't have a good answer other than that those who are diligent about maintaining on a regular schedule probably don't run into trouble with either filter, and those who don't have trouble regardless of which they use, only sooner if they use an inferior filter.

Thanks again for the reply.

The VW gas spin-on is 1/2"shorter and 1/4 the MF price.

PH 2870A, AC PF 56, Wix 51318.

I used almost exclusively Fram filters on my 1986 Chevy Suburban 6.2 diesel for years. It had just under 250,000 miles on it when some dimwit woman plowed into me on an icy bridge and totaled it. But at that point, it was running strong and never had the engine opened.

Sorry for the rant...guess when it comes to "name brands" I'm a skeptic. It's not just the fact that the MF branded filter (AGCO) is two to three times more expensive, and the 80 mile round-trip to the dealership to get one (I know, I should keep several on hand to spread that cost out), but just the principle. I can be convinced, but it takes some proof.

I have used NAPA filters sometimes on my MF 255D. Never tried to find one in WalMart.

Someone mentioned Big Dean earlier and I recall a post about two weeks ago that he was going to the west coast until after Thanksgiving so you may not hear anything from him until after the holidays.

Phil in MS.

You're right...I recall now Big Dean saying he'd be gone.

Thanks!