IndyFan, it's just called "Ultra", not "Ultra Guard", not UG.
Originally Posted by IndyFan
So, the question: Is there any other filter that can compete with the Fram's performance? I've not seen any that publish better than 99% at 30 microns or bigger, in the single pass standardized test. Of course, the Fram TG and UG get 99% at down to 20 microns.
The standardized test is NOT a single-pass test. It's ISO 4548-12, a multipass test. (The old SAE HS806 & J1858 multipass tests aren't used much these days.) ................. It's true Fram Ultra does publish better 4548-12 numbers than it's nearest competitors like Amsoil EaO, Royal Purple, Wix XP, Napa Platinum, & Purolator Boss full-syn oil filters. (Wix XP and Napa Platinum's performance are both pretty awful.)
One oil filter might come close or match the Fram Ultra for filtering efficiency, and that is MicroGreen spin-on canister filters. They aren't bypass oil filters; they just screw on there in place of a normal lone oil filter. ... "We installed each competitor's conventional oil filter in a passenger vehicle, and after traveling 40 miles with used, dirty engine oil, oil samples were taken. Then, those same conventional filters were fitted with an adapter to use the microfilter technology in the microGreen® oil filter, and the vehicles were operated another 40 miles. With the addition of the patented microfilter technology, the average five-micron particle count dropped an additional 85%." -- http://www.microgreenfilter.com/Site/Products/microgreen-spin-on-oil-filter.aspx which is controversial since the internal structure of the parallel path oil filter may mean it has to travel many miles (time) to get those really small sub-5-micron particles out that may be missed by the 4548-12 bench test. And, Fram Ultra almost certainly beats the MicroGreen for grams of gunk held before clogging. The internal parallel fluid path in the MicroGreen should scrub out the small stuff, slowly over hundreds of miles anyway.
Originally Posted by IndyFan
According to Fram, the UG media flows better, too,
I don't see Fram claiming anything about flow. Do you have a website link or document to show that?
That said, there is some evidence the full-synthetic media oil filters do flow better. There was a differential pressure vs. flow rate graph that showed the old AC-Delco UltraGuard (no relation to Fram Ultra), which AC-Delco doesn't offer any more in the old form with full-syn media, did flow better than mixed paper-syn media oil filters. This should help with reducing the frequency of bypass events at least, a good thing.
Originally Posted by Bottom_Feeder
Originally Posted by Phishin
..... and another half dozen Fram RACING filters.
Why Fram Racing filters? 94% efficiency @20 microns is nothing to write home about.
Fram Racing oil filters are very good. Efficiency not bad, silicone ADBV, screen over bypass valve, high bypass valve pressure threshold, and built ruggedly. Its a great oil filter to use in Subarus and GM engines built in the last 6 years where high bypass pressures are favored, and in off-road or racing applications where you need extra ruggedness.
Originally Posted by IndyFan
So, the question: Is there any other filter that can compete with the Fram's performance? I've not seen any that publish better than 99% at 30 microns or bigger, in the single pass standardized test. Of course, the Fram TG and UG get 99% at down to 20 microns.
The standardized test is NOT a single-pass test. It's ISO 4548-12, a multipass test. (The old SAE HS806 & J1858 multipass tests aren't used much these days.) ................. It's true Fram Ultra does publish better 4548-12 numbers than it's nearest competitors like Amsoil EaO, Royal Purple, Wix XP, Napa Platinum, & Purolator Boss full-syn oil filters. (Wix XP and Napa Platinum's performance are both pretty awful.)
One oil filter might come close or match the Fram Ultra for filtering efficiency, and that is MicroGreen spin-on canister filters. They aren't bypass oil filters; they just screw on there in place of a normal lone oil filter. ... "We installed each competitor's conventional oil filter in a passenger vehicle, and after traveling 40 miles with used, dirty engine oil, oil samples were taken. Then, those same conventional filters were fitted with an adapter to use the microfilter technology in the microGreen® oil filter, and the vehicles were operated another 40 miles. With the addition of the patented microfilter technology, the average five-micron particle count dropped an additional 85%." -- http://www.microgreenfilter.com/Site/Products/microgreen-spin-on-oil-filter.aspx which is controversial since the internal structure of the parallel path oil filter may mean it has to travel many miles (time) to get those really small sub-5-micron particles out that may be missed by the 4548-12 bench test. And, Fram Ultra almost certainly beats the MicroGreen for grams of gunk held before clogging. The internal parallel fluid path in the MicroGreen should scrub out the small stuff, slowly over hundreds of miles anyway.
Originally Posted by IndyFan
According to Fram, the UG media flows better, too,
I don't see Fram claiming anything about flow. Do you have a website link or document to show that?
That said, there is some evidence the full-synthetic media oil filters do flow better. There was a differential pressure vs. flow rate graph that showed the old AC-Delco UltraGuard (no relation to Fram Ultra), which AC-Delco doesn't offer any more in the old form with full-syn media, did flow better than mixed paper-syn media oil filters. This should help with reducing the frequency of bypass events at least, a good thing.
Originally Posted by Bottom_Feeder
Originally Posted by Phishin
..... and another half dozen Fram RACING filters.
Why Fram Racing filters? 94% efficiency @20 microns is nothing to write home about.
Fram Racing oil filters are very good. Efficiency not bad, silicone ADBV, screen over bypass valve, high bypass valve pressure threshold, and built ruggedly. Its a great oil filter to use in Subarus and GM engines built in the last 6 years where high bypass pressures are favored, and in off-road or racing applications where you need extra ruggedness.