On the fuel system, that is similar to what I do. I run a RACOR 690T and change it @25k as recommended by RACOR, about 1 time per year. I change the OEM ff 1 time per year when I change the RACOR. Have done that once. The fp has stayed just fine. I do drain a sample about 1 time per month and visually look at sediment and water stripped by the RACOR ff. Generally have a drop or two of water.
Since the LFS-802 is a bypass I will have to do some evaluation as to what to change and when and why.
I see you have an advantage in the Frantz. You change the closest tolerance filter the most often (2500) and add makeup oil the most often (2500). I wonder what your flow rate through the TP is?
The RACOR bypass will do 1. 5 quarts / min or the entire engine oil volume (12 qts for simplicity of math) in 8 minutes.
There is probably something to be said in doing "makup" oil every 2500 in keeping the integrity of the additive etc package in good shape. Sort of like a heart beat. Your oil heart beat is changing 8. 3% (1/12) of the oil every 2500. The "normal" oil heart beat is 100% (12/12) of the oil every 5000 without the additional bypass filter. Interesting question, what if the "normal" user were to change 8. 3% every 2500 miles.
Do "we" change the oil every 5000 to change the additive package or because there is starting to get to be a lot of particulate accumulating that are smaller than the Stratapore can filter out but still be damageing to the engine? Probably both?
What does a graph of the life of the oil look like? Is it straight line, exponential? What is the best indicator of oil life?, TBN? as a % of "out of the bottle". What happens to the TBN when you do the 8. 3% "reload"? What would the TBN look like if you "reloaded" 8. 3% every 1000 (or some other number).
There are lots of interesting questions here. There are probably 2 major sets of questions. One set is keeping the oil particulate clean so there is less wear (ie good metal numbers) which a bypass will do. The other question is keeping the oil's ability to absorbe acids of combustion at a reasonable level, which you do by the 8. 3% reload every 2500. Probably many more questions than that, but those come to mind.
My oil analysis kits should be here this week. I am at a "normal" oil change point (50k). I am going to get a sample of the 5k oil and send that in. Also going to send a clean sample to baseline the DELO 400.
Bob Weis
Since the LFS-802 is a bypass I will have to do some evaluation as to what to change and when and why.
I see you have an advantage in the Frantz. You change the closest tolerance filter the most often (2500) and add makeup oil the most often (2500). I wonder what your flow rate through the TP is?
The RACOR bypass will do 1. 5 quarts / min or the entire engine oil volume (12 qts for simplicity of math) in 8 minutes.
There is probably something to be said in doing "makup" oil every 2500 in keeping the integrity of the additive etc package in good shape. Sort of like a heart beat. Your oil heart beat is changing 8. 3% (1/12) of the oil every 2500. The "normal" oil heart beat is 100% (12/12) of the oil every 5000 without the additional bypass filter. Interesting question, what if the "normal" user were to change 8. 3% every 2500 miles.
Do "we" change the oil every 5000 to change the additive package or because there is starting to get to be a lot of particulate accumulating that are smaller than the Stratapore can filter out but still be damageing to the engine? Probably both?
What does a graph of the life of the oil look like? Is it straight line, exponential? What is the best indicator of oil life?, TBN? as a % of "out of the bottle". What happens to the TBN when you do the 8. 3% "reload"? What would the TBN look like if you "reloaded" 8. 3% every 1000 (or some other number).
There are lots of interesting questions here. There are probably 2 major sets of questions. One set is keeping the oil particulate clean so there is less wear (ie good metal numbers) which a bypass will do. The other question is keeping the oil's ability to absorbe acids of combustion at a reasonable level, which you do by the 8. 3% reload every 2500. Probably many more questions than that, but those come to mind.
My oil analysis kits should be here this week. I am at a "normal" oil change point (50k). I am going to get a sample of the 5k oil and send that in. Also going to send a clean sample to baseline the DELO 400.
Bob Weis