Kevin Rutherfrauds $200000 Signature glider truck has complete engine failure!!!

bottom line for me is I know what to expect running 15w40, regular oil filter, and changing every 15,000 for typical OTR work, 10,000 for local. thousands of thousands of trucks done this way. Wanna try to go longer, use different viscocities, add filters ? go for it ! and when a couple thousand of you guys run an engine 1.5 million doing it that way I'll consider it.

 

Comfort level is important! That said , as long as the oil is staying clean there is really no need to change it. I know this but even with bypass filter in place we never pushed past 100k, but oil sample (CAT) still said run and retest in 15,000. Don't know if CAT still offers their bypass system ( filtered down to 1 micron ) . We rebuilt that truck at 1.5 mil, was not ready , but head gasket blew.( if going in any way) Running a bypass system is just smart! If you want to drain it at 15,000 that's fine ! No harm done by really clean oil.
People saying one can not improve a truck a factory built, are not using their full brain. Most of the people posting here has done something to improve their truck(s). Don't care if KR agreed or not with these changes. As long as the truck does it given job better!
KR's advise is sound (with some common sense) . Nothing is a correct fit for everyone / every truck. My brother pulls a car hauler, getting him in the mid 7s has been a fight. None of the aero stuff is going to help. Have kicked around changing to a 6x2 setup. With his trailer there is no room for a lift. Most car haulers car in the 5s . But always room for improvement!

 

sdaniel, are you certain of it ?

 

I run a bypass filter with Rotella T6 full synthetic. I am still up in the air about going too far past a 30k drain interval. I replace the filter and test at 10k miles. I can replace all 9 gallons for $180. The cost to benefit ratio is a gamble I'm kinda too chicken to take just yet. I'd like to hear more from those that have extended the drains to well past 300k miles.

 

So if you replace 9 gallons & filters every 16,666 miles vs filters every 16,666 & 9 gallons every 100,000 miles -- you save a whopping $0.01/mile.

 

Exactly, but factor in a rebuild at $0.10/mile because the bearings are shot, and I'm wondering what the great benefit was.

 

keep in mind also that, depending on design, any oil which actually goes through the bypass filter is oil which would have been pumped through the head. probably no biggie, the way I understand it's barely oozing through there. but it's facts that's less oil to the head. Also, while the filter MAY keep oil cleaner at 15,000 miles, I change mine, my oil is cleaner than someone with bypass going extended. So when is their oil cleaner than mine again ? by 30,000 miles, maybe... after a few changes probably never until they finally change it.

My point being, how much does running this oil that may pass the test but it's still not new. Well how does this affect engine life ? It can't increase it, does it decrease it by 100,000 miles ? 10,000 or 200,000 ? Would there be anyway to know ?

You can see why KR loves them, it's an almost liability free product. How do you really prove it's doing much and/or not hurting your engine ?

 

If you add a bypass it would take oil to initially fill the extra system, but once filled. I couldn't see it depriving the head of oil. You've added a filter that is now primed and full of oil that is putting out oil the same amount and flow rate as oil coming in.

 

KR worshiping aside, I like the bypass because I'm filtering out carbon particles 7-25 microns. The high flow filter only gets me down to 25, while damage causing size is 7. I'm filtering down to 3. Just giving the motor some added filtration, and slightly increasing the drain interval to offset the cost.

 

the way I understood it the oil is pumped through pressure filter first. Normally it would then be forced to go through the head. With a bypass it has it's choice to go through bypass filter and return to oil pan or continue to head.

path of least resistance, most will go to head while a little goes through filter. So it is literally leeching oil that would otherwise go to the head. I don't think it's much.. got oil pressure ? just again saying over a million miles is it just enough to make a difference ?

also, I have to wonder any contamination would have to be small enough to get by rings or valve guides. 3 micron sounds impressive, but how practical is it ? and how likely is it a particle makes it past pressure filter and happens to make it to the bypass filter instead of running through the engine again and again til it gets lodged elsewhere ? it is a bypass filter after all, by definition it never filters all the oil.