mrdrinksalil
1/2 ton status
I've heard that before, but thats OLD info. I just dont' see how Fram could still have bad filters out there when I've been buying them my entire life without problems
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.
0 oil pressure when all twisted up.
- Thread starter mrdrinksalil
- Start date
Agreed, my motor had Fram filters and Pennzoil (which also has a bad reputation for some reason) for its first 180K. When I took it all apart, everything was still in good shape (bearings, rings, compression were all still good).
I now run Mobil 1 synthetic and NAPA gold filters, I change it once a year. I like the synthetic because it lasts a lot longer than conventional oil and when the oil pressure gets low the synthetic will help save the motor.
Just above the oil filter. The plug is sometimes hard to remove though.
Cut open a Fram filter and also a Wix filter and look at the filter media and the surface area and the quality of each and you won't want to run a Fram filter anymore.
mrdrinksalil
1/2 ton status
I will do that. I have a few fram filters that i've been saving to cut open on the 250K mile grand chero. but havn't barrowed a tool to slice them open with yet.
Oil and engine technology have advanced so far, with 100,000 miles plus being the norm rather than the exception, that oil filters probably play very little role in day to day operation. (just look at current oil change intervals) Cumulatively, if talking 200,000 miles however, an oil filter probably plays a great role, at least when it comes to bearings and what not. Oil starvation could be a whole 'nother thing.
Take one apart, I bet you see the same cardboard end caps they have been using since before the oil filter study came out, which I believe to be about the first place to note the poor quality of the Fram's.
It's not about manufacturing defects, it's about the quality of construction in general. Besides, last I looked, most Fram's cost more than the Napa/Wix filters anyways. Better components for equal or less cost...which way would you go?
fram sucks. I get better oil pressure across the board with either Mobil 1 or K&N oil filters
Shouldn't oil pressure be regulated by the oil pump bypass, not filter restriction? Scott?
(what I mean is, if the filter fails, plugs, whatever, doesn't the bypass allow engine oil pressure to remain the same, except unfiltered?)
(what I mean is, if the filter fails, plugs, whatever, doesn't the bypass allow engine oil pressure to remain the same, except unfiltered?)
Last edited:
mrdrinksalil
1/2 ton status
filter shouldn't play a roll in oil pressure unless it gets plugged and then the bypass has to do its thing. Bypass really just keeps the filter from blowing apart if it can't handle the oil flow. Pressure is decided by pump and all the orifices/bearings and such its gotta pump through. Old vehicle loses oil pressure due to pump wear, and tolerances beween bearings increase. Correct me if im wrong
I think my question was a bit unclear, rephrased.
There is a very good conversation with a huge amount of information on oil at the rubicon owners forum (have to sign in to see it or I would have linked it). Since the 4.0L in the 2006 jeep TJ was the last on the market with flat tappet lifters they were having big problems with lifter wear. Boiled down to most oil no longer have the protection for flat tappet lifters anymore. Amsoil and Mobil one were two that had the correect ingredients. Chrysler also has an oil for them. Another was Harley Davidson oil which at the time was made by Kenzoil. Kenzoil was also popular with the aircooled VW crowd... not sure this helps your downhill problem but overfilling by a quart is also common practice on the SV IH 304, 345 and 392 engines in Scouts and pickups. Just to not loose presure at highway speeds. Same engine as school buses etc...
Oil pressure is determined by the bypass valve in the oil pump and also bearing clearances. There is a bypass valve in an oil filter adapter and all it's job is to allow oil to "bypass" if the filter becomes clogged.
Wix filters have metal end caps unlike Fram which has the cardboard end caps and a much small surface area of filtering media.
Wix filters have metal end caps unlike Fram which has the cardboard end caps and a much small surface area of filtering media.
