JOE GIBBS - IMPORTANCE OF OIL FILTRATION

[buster]

http://www.joegibbsracingoil.com/trainingcenter/filterchangetest.html

Quote:
Over 70% of all machine wear is realted to contamination, and dirt is the number 1 source of contamination. Reducing the dirt level in your engine reduces the wear in your engine, so what is the best way to keep the dirt level low? Frequent oil filter changes and high quality air filters (not high flow air filters) can remove dirt and prevent dirt from entering the oil system.


Quote:
Chart A highlights the difference in dirt contamination of the oil from changing the oil filter after every race compared to only changing the filter when you change the oil. It clearly shows that changing the oil filter regularly removes more dirt (silicon on the oil analysis) from the engine. When you remove the dirt, you remove the particles that cause abrasive wear in the engine. Chart B shows the results of the wear metal analyis from these used oil drain samples. The oil analysis shows that less dirt (abrasive particles) equals less wear metals (less engine wear). All of this leads to longer engine life, and longer oil life. You spend less money on oil and your engine lasts longer. All you have to do is follow our oil change program.

After every race, change your oil filter and just top off the oil level. You don't need to change the oil, just change the filter. Keep changing the filter and adding oil after each race until you've reached 500 laps of racing. After 500 laps, you can change the oil. If you are running Methanol, change the oil after 5 races (just change the filter after each race).

 

[ARCOgraphite]

Makes sense to me without a bypass system but who races with a wet sump, Diggers? But I still always wonder how much of the wear is from ... wear?

 

[webfors]

Hmmm... keep the oil, change the filter. That would make sense for long drain'ers more than your standard 5k oci'ers. The top off must help too.

 

[Gary Allan]

500 laps with poor(er) air filtration ..oddball fuel ...who knows what a:f mixtures.

 

[Brian Barnhart]

Something seems fishy. Unless the filters are beginning to reach their capacity in only one race, I don’t understand how a filter change could be helping much.

Of course, a lot of important details are missing. The data cannot be from the same conditions unless it’s two different engines. And if the data is from the same engine, it’s not from the same races. (You can’t get UOA data from the same engine run both with and without filter changes, at the same time). Were the races on dirt or pavement?

Then there are the micron ratings of the Joe Gibbs filters. The one with the finest filtering has a nominal micron rating of 61.

Must be dirt track racing and the filters are filling up fast. But with a nominal micron rating of 61, there will be a bunch of big stuff in the oil that the filter won’t catch. With all that silicon, sure seems like the air filters aren't catching much. Too bad the Gibbs cars weren't running up front in the clean air.

 

[deven]

Originally Posted By: webfors
Hmmm... keep the oil, change the filter. That would make sense for long drain'ers more than your standard 5k oci'ers. The top off must help too.


Seems like Honda recommends just the opposite, dump the oil but change the filter every other oil change. It kind of makes sense as the filter becomes more efficient as it ages until its compromised by poor quality or relief valve.

 

[buster]

I was thinking the same thing. Honda recommends 20k mile filter changes for the Accord, using regular filters and oil.

 

[Steve S]

The more stress or output on an engine the more wear there will be. Most Hondas aren't driven at 7,500 + rpm for hours on end.

 

[Steve S]

Originally Posted By: buster
http://www.joegibbsracingoil.com/trainingcenter/filterchangetest.html

Over 70% of all machine wear is realted to contamination, and dirt is the number 1 source of contamination. Reducing the dirt level in your engine reduces the wear in your engine, so what is the best way to keep the dirt level low? Frequent oil filter changes and high quality air filters (not high flow air filters) can remove dirt and prevent dirt from entering the oil system.


duh!

 

[Brian Barnhart]

It seems Gibbs' is concluding that dirt is the primary cause of wear, not stress or high RPM from racing conditions. His wear numbers and silicon (single digit PPMs) for the "changed oil filter for every race" approach don't seem alarming for (what appears to be) about 500 racing laps. I'd say his conclusion is probably correct assuming the data is good.

However I wouldn't assume the data is good from what I can see. But he probably knows more about the data.

 

[Audi Junkie]

He thinks you have to "take out" the dirt by removing the filter, rather then comprehending that the filter does that in itself, even if it remains in place.

 

[mechtech2]

Joe Gibbs has a certain credibility.
But so do people with Doctorate degrees in any field , and they often disagree on diagnosis and treatment.
Changing the oil filter every race? I wouldn't.

 

[Rand]

So hes saying he has lower contamination when he changes out 50% of his oil over 10 races... hummmmm... DUH

 

[Audi Junkie]

Originally Posted By: mechtech2
Joe Gibbs has a certain credibility.
But so do people with Doctorate degrees in any field , and they often disagree on diagnosis and treatment.
Changing the oil filter every race? I wouldn't.



Stupid is as stupid does.

 

[Jim Allen]

I agree, this is false or erroneous data. Or data incorrectly interpreted. The filter doesn't stop functioning just because it has a little contamination in it. Surprising that an oil blender hasn't figured that out yet... which makes me feel the need to examine anything I read from them in more detail.

 

[Steve S]

I would put money on the reason the oil filter is changed after every race is because it is cut open and inspected for metal debris.

 

[ARCOgraphite]

Much greater chance of running bypass in a partially plugged filter on a race engine than your pass car? I dont recall using filter with bypass valving on race engines I recall using dual FL1A filter on a remote mount. 7500 rpm 70gal/min? I would think there is a bypass in the filter mount with a "low flying bird" catcher screen on a basic shade tree circle-track engine.

 

[mechtech2]

SteveS - Good point. For high end racers like this, a few dollars more each race is nothing. And there may be information in the filter.