Life of BE-90 ?

[96 Cherokee]

If you are running an Amsoil dual by-pass with a BE-90, how many miles do you get out of the BE-90 before it needs replaced? Also, how often do you change the full flow filter? I'm talking passenger car/light truck, not the big rig stuff.

 

[Dick in Falls Church]

If you are running a gas engine, the current recommendation is to change the full flow filter at 6 months/12,500 miles. If you do oil analysis, the lab will tell you if the full flow should be changed.

The new diesel recommendation is 25,000 miles OR 1 year for oil, same for the new AMSOIL or Donaldson full flow filters. Again, do an oil sample and the lab will tell you if it is necessary to change bypass element.

Rough way to tell is to feel the filter when the oil is hot. If the bypass element is hot, it is working. If it is cool, or just warm, probably time to change it.

If the oil sample shows soot buildup to the point you are uncomfortable, change the element.

Depending on the vehicle and usage, I've known bypass elements to last 60-80,000 miles in some diesels, less in others.

 

[96 Cherokee]

Thanks for the reply. I just installed my old Amsoil aluminum die cast dual by pass on my 96 Jeep Cherokee with 4.0 gas engine. Have not had the by pass installed on anything since I removed it from my old 91 Subaru Legacy 9 years ago. Seems I recall back then Amsoil recommended a full flow filter change every 12,500 miles, but the oil could be good for 100,000 miles or more. They told me for my application of running a rural mail route with gravel roads I should change the oil at 25,000. I recalled the part about checking the by pass filter for heat to see if it's working, but I don't recall how many miles it went before needing replaced. Been too long ago.

 

[olympic]

I have a couple Pontiac Montanas with the Amsoil bypass setup. I change the full flow at 12.5k and the bypass filter at 25k. By then they are taking a long time to heat up so they are nearly plugged.

I wouldn't just go 25k blindly though. A few UOA's are needed to make sure your driving conditions are appropriate for that kind of OCI. A mail route on gravel roads doesn't sound like a good candidate for 25k drains.

 

[Andy H]

quote:

---

Originally posted by 96 Cherokee:
If you are running an Amsoil dual by-pass with a BE-90, how many miles do you get out of the BE-90 before it needs replaced? Also, how often do you change the full flow filter? I'm talking passenger car/light truck, not the big rig stuff.

---

Cherokee,

AMSOIL's oil change recommendation for your gas vehicle is 1 year or 25,000 miles for the standard oils, 1 year or 35K for the 0W-30. This is with standard filtration.

Amazingly severe service - like that of the Texas State Police (they're using AMSOIL 10W-30 in all 3000 Crown Vics, Impalas, trucks, SUVs and unmarked mustangs and vettes) - calls for a 20,000 mile change. They change the SDF oil filters at 10,000 mile intervals. They arrived at these intervals with a five-year fleet test and oil analysis results.

For the bypass - whether the dual remote or a single parasitic bypass - is to start with a 6 months or 12,500 mile filter change using an AMSOIL SDF filter, or a 1 year or 25,000 mile filter change using the new Absolute Efficiency oil filters. The current recommendation (for the SDF filters) is to change the bypass every second full-flow change. I don't yet know if the bypass element change interval will change. Again - this is a 'works for everyone, very conservative' filter change recommendatin.

You can use oil analysis to walk the filter change intervals out. You can also use the temperature of the bypass element as a guide - cold means you've gone too long - shorten the next interval.

Keep in mind that by using the bypass filter you stop thinking in terms of 'oil change intervals' and think in terms of 'filter change intervals' and following oil analysis results.

Andy

 

[96 Cherokee]

I guess I'll do a full flow filter change at 12,500 miles and take a sample for a UOA. Thanks for the replies.

Neal

 

[Andy H]

quote:

---

Originally posted by 96 Cherokee:
I guess I'll do a full flow filter change at 12,500 miles and take a sample for a UOA. Thanks for the replies.

Neal

---

Neal,

That will work - especially for a baseline. AMSOIL doesn't require the first sample until the one-year point, as that's when you start the 'extended drain interval'.

I spoke with the VP of AMSOIL yesterday and asked about the new filters when used in the dual remote. The new EaO full-flow filters will be a 1-year 25,000 mile change 'for sure'. It looks like the bypass-element change interval will run to the 50,000 mile or 2 year point. That isn't yet nailed-down, and may not be until the new bypass filters are released after the first of the year.

If you're going to leave the filters in place and use oil analysis for a filter change indication, get a baseline silicon count from virgin oil and watch the silicon/silica/silicone number in the analysis report. A 15ppm increase in Si over baseline/virgin is a filter change indication.

Cheers,
Andy

 

[96 Cherokee]

quote:

---

Originally posted by Andy H:

quote:

---

Originally posted by 96 Cherokee:
I guess I'll do a full flow filter change at 12,500 miles and take a sample for a UOA. Thanks for the replies.

Neal

---

Neal,

That will work - especially for a baseline. AMSOIL doesn't require the first sample until the one-year point, as that's when you start the 'extended drain interval'.

I spoke with the VP of AMSOIL yesterday and asked about the new filters when used in the dual remote. The new EaO full-flow filters will be a 1-year 25,000 mile change 'for sure'. It looks like the bypass-element change interval will run to the 50,000 mile or 2 year point. That isn't yet nailed-down, and may not be until the new bypass filters are released after the first of the year.

If you're going to leave the filters in place and use oil analysis for a filter change indication, get a baseline silicon count from virgin oil and watch the silicon/silica/silicone number in the analysis report. A 15ppm increase in Si over baseline/virgin is a filter change indication.

Cheers,
Andy

---

Andy,
Just thinking about this, I wonder if the Si that is too small to be filtered out by the dense bypass filter is non-significant to engine wear. Every once in a while on this forum I run across the statement that "motor oil does not wear out, it just gets dirty". If this is true, and and we can clean the oil with the dense bypass filter and the consumable additives can be replaced with make up oil, then why would we ever need to change the oil when using the Amsoil dual remote bypass filter systems? I think I read Ralph Wood post where he said he NEVER changes oil on his Motor Guard equiped vehicles. Thoughts?

 

[Andy H]

QUOTE]Andy,
Just thinking about this, I wonder if the Si that is too small to be filtered out by the dense bypass filter is non-significant to engine wear. Every once in a while on this forum I run across the statement that "motor oil does not wear out, it just gets dirty". If this is true, and and we can clean the oil with the dense bypass filter and the consumable additives can be replaced with make up oil, then why would we ever need to change the oil when using the Amsoil dual remote bypass filter systems? I think I read Ralph Wood post where he said he NEVER changes oil on his Motor Guard equiped vehicles. Thoughts?[/QUOTE]

For the Si count: Folks from two different labs told me that Si is large enough to be affected by a full-flow filter, and is the only item in the particle count that can be used to check the function of the filter.

Basically you're right - the oil stays in the engine, the filters get changed, and you monitor everything with UOA. You'd have to change the oil if something breaks, but otherwise wouldn't have to.

I know people with F350 diesel work trucks with about 200,000 miles on both oil and ATF.

Andy