Originally Posted By: ZeeOSix
Originally Posted By: 2015_PSD
Originally Posted By: WellOiled
I need to chase down a stethoscope to figure out if the power steering pump or the oil filter is in bypass at startup on a 60F morning. Filters may be in bypass more often than we would like.
Many thanks for the kind words! Note that according to some fairly detailed testing by Jim Allen (you can search his posts) bypass events happen very infrequently and usually only when at least two of the three criteria are met:
1. Cold external temperatures
2. Thicker viscosity oils >5W-xx
3. High throttle starts
+1 ... here are a couple of the Jim Allen threads on his bypass testing.
https://bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2981765
https://bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=3197094
ZeeOSix,
These Jim Allen threads are excellent. I have not quite finished them yet. It is scary how close my thoughts line up with what these gents were discussing at the time.
1. Jim used a 10W30 to help cause bypass events at a higher ambient temperature and thus simulating the use of a 5W20 at a much lower temperature. I have a jug of QSAD 10W30 I plan to run for the summer months. It may be just the ticket to pair with the WIX filter to get a better margin on the results since it is pretty warm in Houston. 15W40 might actually be a better test. Neither 10W30 nor 15W40 are Ford recommendations for this engine. But, if the filter tolerates it then, it should give potential users more confidence in using the filter.
2. Jim used a bypass filter. By using a bypass filter, I think the majority of the filtering is done by the bypass filter and the full flow filter does not load up. This would take a lot of stress and strain off the full flow filter. In this configuration, bypass events would be minimized at both low and high temperatures.
3. After reading some of the posts, I would expect the eCore might enter bypass at a higher temperature than the WIX would using the same oil viscosity. The filter with more free flowing media would win on this point.
4. I was thinking the ideal setup would be a real differential gauge across the filter element, an absolute oil pressure gauge and an official oil temperature gauge. I just have not drummed up enough interest to go ahead and do it. On top of that, I was leaning toward some method that everyone can do not just someone that sets up a test vehicle like Jim did. With this setup, one could know at a glance if there was a lube oil issue in the works.
5. To quote Jim. "When the (10W30) oil is cold, 30-40F, DP will bump right at the point where the bypass is beginning to open." Jim was using the FL-820S or the PureOne. I may or may not be seeing this with the AC Delco using 5W30 oil. The bypass setting on the PF1250 is about 12 psi which is low compared to the WIX at 22 psi. I heard the noise which sounded like hydraulic through an orifice tube. I have the stethoscope ready to check this out Saturday to see what and where the sound is coming from on cold start. I will have to work fast as the event may not last long. Personally, I think it is the alternator I replaced in September.
6. I do not think today's FL-820S will take the abuse Jim put on the filter when he made the tests. So the question is what happened to Purolator's quality?
7. These folks were getting data and tests from Purolator. So, what happened?
These posts are definitely a blessing.
Thanks.
Originally Posted By: 2015_PSD
Originally Posted By: WellOiled
I need to chase down a stethoscope to figure out if the power steering pump or the oil filter is in bypass at startup on a 60F morning. Filters may be in bypass more often than we would like.
Many thanks for the kind words! Note that according to some fairly detailed testing by Jim Allen (you can search his posts) bypass events happen very infrequently and usually only when at least two of the three criteria are met:
1. Cold external temperatures
2. Thicker viscosity oils >5W-xx
3. High throttle starts
+1 ... here are a couple of the Jim Allen threads on his bypass testing.
https://bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2981765
https://bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=3197094
ZeeOSix,
These Jim Allen threads are excellent. I have not quite finished them yet. It is scary how close my thoughts line up with what these gents were discussing at the time.
1. Jim used a 10W30 to help cause bypass events at a higher ambient temperature and thus simulating the use of a 5W20 at a much lower temperature. I have a jug of QSAD 10W30 I plan to run for the summer months. It may be just the ticket to pair with the WIX filter to get a better margin on the results since it is pretty warm in Houston. 15W40 might actually be a better test. Neither 10W30 nor 15W40 are Ford recommendations for this engine. But, if the filter tolerates it then, it should give potential users more confidence in using the filter.
2. Jim used a bypass filter. By using a bypass filter, I think the majority of the filtering is done by the bypass filter and the full flow filter does not load up. This would take a lot of stress and strain off the full flow filter. In this configuration, bypass events would be minimized at both low and high temperatures.
3. After reading some of the posts, I would expect the eCore might enter bypass at a higher temperature than the WIX would using the same oil viscosity. The filter with more free flowing media would win on this point.
4. I was thinking the ideal setup would be a real differential gauge across the filter element, an absolute oil pressure gauge and an official oil temperature gauge. I just have not drummed up enough interest to go ahead and do it. On top of that, I was leaning toward some method that everyone can do not just someone that sets up a test vehicle like Jim did. With this setup, one could know at a glance if there was a lube oil issue in the works.
5. To quote Jim. "When the (10W30) oil is cold, 30-40F, DP will bump right at the point where the bypass is beginning to open." Jim was using the FL-820S or the PureOne. I may or may not be seeing this with the AC Delco using 5W30 oil. The bypass setting on the PF1250 is about 12 psi which is low compared to the WIX at 22 psi. I heard the noise which sounded like hydraulic through an orifice tube. I have the stethoscope ready to check this out Saturday to see what and where the sound is coming from on cold start. I will have to work fast as the event may not last long. Personally, I think it is the alternator I replaced in September.
6. I do not think today's FL-820S will take the abuse Jim put on the filter when he made the tests. So the question is what happened to Purolator's quality?
7. These folks were getting data and tests from Purolator. So, what happened?
These posts are definitely a blessing.
Thanks.
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