The brand TP I use usually varies from one time to another, depending on the store I'm in and what is available - I'm currently working my way thru a 4-pack of Scott TP...
Delo 400 is stated to be an "ISO/SYN" oil - one that has some of the beneficial charactersitics of a synthetic, but not all - I'll leave it to the lube experts to tell us exactly what that means to us end users...
I prefer to change the TP cartridge one time in a 5000 mile run, at the 2500 mile mark, and add a single quart of oil when the change is made - remarks from the lab doing the analysis suggest I should go longer on the oil due to low wear numbers and condition of the oil - but I prefer a 5000-7500 interval, depending on season and usage.
TP "fall apart" - yeah - we hear THAT old wives tale all the time
Fact is, currently MANY large commercial and industrial diesel users employ some form of paper towel or similar element bypass filters in their critical installations - they'd hardly do that if the filter material routinely ended up in the crankcase!
What are regular oil/fuel filters made of?
P-A-P-E-R... so is TP!
Fact is oil does NOT weaken paper - try wetting a piece of newspaper or TP, then compare its resistance to tearing with a dry sheet.
IF the TP was "falling apart", I seriously doubt that after 5000 miles I would see oil analysis numbers like these - check and see if you can spot the item where ppm of toilet paper is reported:
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Only unusual circumstance in the oil this report is on, is the addition of 3 bottles of STP to the crankcase on Rotella T I was using at that time - this was the last report on my old '91 Dodge at 113,000 miles before buying the '02...
I'm not ashamed to compare the above numbers to ANY other filter - OR oil - dino or synthetic!
