This is the oil filter for a V8??

fatrod · #1 (**permalink**) 03-10-2003, 08:29 PM

I was out buying an oil filter and was AMAZED to see how miniture it is. Does anyone know of a brand and part number that will match up but provide at least double the size. The SR5 I owned back in '96 with a four banger had a filter twice the size of the V8 model.

KLS · #2 (**permalink**) 03-10-2003, 10:15 PM

The hard part is finding a bigger filter with the correct bypass valve setting. I think the Toyota 90915-20004 filter has a bypass setting of about 20 psid. There are lots of filters with the correct thread, 3/4-16, and the gasket will fit, but the bypass is set much lower and the filter will bypass when it should be filtering. The big filter from '80's Fords is one that fits, but the bypass is only 8 psid.

Try looking in the big filter catalog at an auto parts store that sells WIX, or Baldwin/Hastings, or Purolator...see what you find.

Why do you think that the current small filter is inadquate? It looks puny, but it's good enough for Toyota's 100,000 mile extended warranty, if you bought that.

Filter technology has improved, also. They're now able to get more holes of the correct size in the filter media, so a small filter filters has OK flow and good capacity.

Ken

Tundraholic · #3 (**permalink**) 03-10-2003, 10:22 PM

Yea,

Phram PH8A Motorcraft FL-1 I forgot what the Mobil-1 # is, any way same as the large Ford or Chrysler filter. I have been using the Mobile-1 since my 2nd oil change 2 years ago.

Tundraholic

fatrod · #4 (**permalink**) 03-11-2003, 07:32 AM

Thanks Ken, I didn't realize the bypass pressure was that much different. I have another issue to deal with now. I was rammed buy a garbage truck last weekend, now the tailgate takes more effort to open and close, the passenger door now has a poor weatherstrip seal and the drivers door is out of align. Just had the truck for one month and it gets slammed buy a garbage truck.

v8Toilet · #5 (**permalink**) 03-11-2003, 04:54 PM

Why would you want a larger filter?

Imdone · #6 (**permalink**) 03-11-2003, 08:41 PM

I have seen kits to add another oil filter kind of like a piggyback system. You will actually run 2 in-line.

KLS · #7 (**permalink**) 03-11-2003, 10:21 PM

I think those dual filter systems have the filters parallel, i. e., side-by-side.

I don't see any advantage in dual full-flow filters. If a person is going to keep his vehicle for many hundreds of thousands of miles, a bypass filter pays off...plus you can move it to the next vehicle.

Ken

v8Toilet · #8 (**permalink**) 03-11-2003, 10:23 PM

Quote:

Originally posted by KLS
I think those dual filter systems have the filters parallel, i. e., side-by-side.

I don't see any advantage in dual full-flow filters. If a person is going to keep his vehicle for many hundreds of thousands of miles, a bypass filter pays off...plus you can move it to the next vehicle.

Ken

Can you explain why?

KLS · #9 (**permalink**) 03-12-2003, 01:06 PM

First, the only way to tell how well oil filters are working is to have a lab do a particle count of the used oil, just like the particle count done to analyze hydraulic oil, and I haven't done that.

I think that a single good full flow filter will do it's job. I don't think that our engines create so much crud that the filter plugs within the normal oil drain interval, so there's little added value with dual filters.

A bypass filter removes particles down to 3 micron, and some particles down to 1 micron in size. This does add to the life of an engine. Even though the clearances inside the engine are quite a bit greater than 3 micron, there are times these particles can agglomerate and form larger abrasive particles, but not yet big enough to be caught by the full flow filter. Also, there are times inside the engine when the only thing preventing metal to metal contact is the antiwear agents in the oil, and the clearances in these cases are zip.

Many of these filters also have cellulose in the filter media that can absorb a small amount of moisture and prevent the formation of acid in the oil which reduces the depletion of the alkaline additive in the oil.

Ken