Oil Filter Thread

[HEMIMANN]

Without a way to tell when oil filter has saturated with contaminants, it's best to change at every oil change for such a minimally expensive maintenance part.

If you're not interested in maximum engine longevity and performance, then you can leave it for every other oil change if you're using synthetic media. Paper should be changed every oil change - heat and time degrade paper quickly. Look what happens to a newspaper (if you know what that is, today).

 

[Ludville1]

Have always changed the oil filter at every oil change on all vehicles/engines...always will.

 

[Heathen-19]

In doing so, changing the oil filter at every other oci, is the idea based on a savings cost of an oil filter?

Wanting to make sure that I get the full potential of the filter and not throwing it away half used.

 

[Heathen-19]

I personally wouldn't wanna be on record for saying this is a good idea, but truly a RP 20-820 can go 10k miles w/o degrading. So the filter is good, of course the greater issue is the quart of dirty oil it holds in the system. So if you are married to that idea, I'd probably drop the oci a bit, say 4k miles instead. But if I was using PUP which isnt that more expensive then cheaper option, I'd stick with 5k mile interval and change my filter.

Not married just making sure I am doing everything possible, efficiently at minimal cost to prevent tick. I have always changed the filter and oil at same time.

 

[Heathen-19]

Without a way to tell when oil filter has saturated with contaminants, it's best to change at every oil change for such a minimally expensive maintenance part.

If you're not interested in maximum engine longevity and performance, then you can leave it for every other oil change if you're using synthetic media. Paper should be changed every oil change - heat and time degrade paper quickly. Look what happens to a newspaper (if you know what that is, today).

Yep, used to help a friend run a paper route back in my younger days. All about engine performance and longevity.

 

[JHoward]

Not married just making sure I am doing everything possible, efficiently at minimal cost to prevent tick. I have always changed the filter and oil at same time.

Fwiw, the price of an oil filter is far cheaper than the cost of an lifter/cam replacement or an engine, js.

 

[ramffml]

Wanting to make sure that I get the full potential of the filter and not throwing it away half used.

They're like 10 bucks, compared to the life of your engine which is 8000+. Its like trying to reuse a starbucks cardboard coffee cup.

 

[Wild one]

They're like 10 bucks, compared to the life of your engine which is 8000+. Its like trying to reuse a starbucks cardboard coffee cup.

Don't you mean Timmies coffee cup

 

[ramffml]

Don't you mean Timmies coffee cup

You got me there sir, I just assumed nobody outside our frozen wasteland knows what timmies is

 

[HEMIMANN]

Tim Horton's?

 

[04fxdwgi]

Don't judge, but putting clean oil in with a dirty filter is kind of like taking a shower and putting the nasty dirty skivies back on.

Have never not changed filter on an oil change. Cheap insurance....

 

[ramffml]

Don't judge, but putting clean oil in with a dirty filter is kind of like taking a shower and putting the nasty dirty skivies back on.

Have never not changed filter on an oil change. Cheap insurance....

Agreed, it just feels wrong. Considering all the other costs associated with running a truck over a 6 month period (my OCI), one tank of gas being $120 and going through at least 8 to 12 of those in that period... no way I'm even considering reusing my filter. That's just me, not judging those who do reuse them.

 

[Travis8352]

You got me there sir, I just assumed nobody outside our frozen wasteland knows what timmies is

Timmies is the best

 

[Wild one]

Top Oil Filters Tested for Restriction and Filtering Efficiency

Brand Ranks tests four popular oil filters (Fram, Mobil 1, K&N, Walmart) to determine their restrictiveness and filtering efficiency...

m.roadkillcustoms.com

 

[HEMIMANN]

Top Oil Filters Tested for Restriction and Filtering Efficiency

Brand Ranks tests four popular oil filters (Fram, Mobil 1, K&N, Walmart) to determine their restrictiveness and filtering efficiency...

m.roadkillcustoms.com

We saw this before - double-post? I recall writing a summary about Fram Ultra being more (too?) restrictive but efficient, we don't know efficiency of Mobil 1 (Champion?), and no test of Royal Purple, which we do have test data for efficiency (almost as efficient as Fram Ultra) but no restriction data. We ASSUME it is less restrictive because it is wound fiberglass instead of matted 'synthetic' media used in Fram Ultra. But we don't have data to back up the physics knowledge.

We also have test data showing Fram Ultra holds more contamination than Royal Purple by a substantive amount - i.e., they last longer, but there is no way to tell in actual use how long this is without a differential pressure gauge hooked up to the filter element - so this 'advantage', being unmeasurable, is pretty useless to us - unless you're one of those guys that insists on saving $9 per filter every 5,000 miles buy not changing it every oil change.

So, per usual, we get folks doing some great test work, but only for a single parameter - which isn't sufficient to make a complete informed decision about which is optimal. Obviously, with Hemi lube system being marginal oiling, we err on the side of less restriction instead more efficiency. That leads again to Royal Purple on educated speculation, and now to Mobil 1 on this flow restriction data.

Oil Filter Choice Ranking (for Hemi engines):
1. Royal Purple
2. Mobil 1
3. Fram Ultra

 

[Burla]

This is why we should cut open filters, in his test you see a vacuum issue only with fram, if I had a vacuum issue I wouldnt be using that filter. Mind you this doesnt mean you will have a vacuum issue with fram ultra, but this is why we cut open filters, to verify you don't. It might have only happened because of grose overload, but many times wiht many filters we can see these issues.

 

[Wild one]

We saw this before - double-post? I recall writing a summary about Fram Ultra being more (too?) restrictive but efficient, we don't know efficiency of Mobil 1 (Champion?), and no test of Royal Purple, which we do have test data for efficiency (almost as efficient as Fram Ultra) but no restriction data. We ASSUME it is less restrictive because it is wound fiberglass instead of matted 'synthetic' media used in Fram Ultra. But we don't have data to back up the physics knowledge.

We also have test data showing Fram Ultra holds more contamination than Royal Purple by a substantive amount - i.e., they last longer, but there is no way to tell in actual use how long this is without a differential pressure gauge hooked up to the filter element - so this 'advantage', being unmeasurable, is pretty useless to us - unless you're one of those guys that insists on saving $9 per filter every 5,000 miles buy not changing it every oil change.

So, per usual, we get folks doing some great test work, but only for a single parameter - which isn't sufficient to make a complete informed decision about which is optimal. Obviously, with Hemi lube system being marginal oiling, we err on the side of less restriction instead more efficiency. That leads again to Royal Purple on educated speculation, and now to Mobil 1 on this flow restriction data.

Oil Filter Choice Ranking (for Hemi engines):
1. Royal Purple
2. Mobil 1
3. Fram Ultra

I'm waiting for somebody to do a hot oil test,as most of these tests are done at room temperature,i wonder how much things change if the tests are done with the oil temp at 200F.

 

[HEMIMANN]

Yep - theoretically, a constant displacement gearotor oil pump will force oil through a restrictive filter element equipped with a high pressure relief valve - so the question really is whether it is built stout enough not to collapse the filter element.

The above pic, without knowing the usage details, shows some distress on the Fram Ultra pleats. Which is why they used to use wire mesh backing on their single layer media. Their claim that their new dual layer, dual density media is stiff enough not to need wire mesh backing remains a claim only, at this point.

 

[HEMIMANN]

I'm waiting for somebody to do a hot oil test,as most of these tests are done at room temperature,i wonder how much things change if the tests are done with the oil temp at 200F.

If the media is truly 'synthetic', temp should matter, right? Dependent on what they mean by "synthetic" material. Clearly fiberglass in not affected mechanically by oil temperatures.

 

[Burla]

Looking at the pic, look at that particular fram ultra top, look at those holes, clearly they chose the fram ultra with the worst holes compared to the field, my guess that effected the test for real.