Seafoam vs Chemtool B12

reo46725 said he uses the same oil as I use, Mobil 1 T4 full synthetic in his Gwing! You stated the PPM of zinc in the Delo and in Rotella T4 but neither of us use those. You are correct that I don't know the PPM contents of the synthetics but what I do know from many years of experience using synthetics is the bikes with wet clutches run cooler and shift smoother with the synthetic and starting up is much easier because the cold oil flows a lot easier. Some years back I did send a sample of my used oil in for analysis after 5,100 miles. I don't honestly remember any numbers but the results said I could easily and safely go another 5K miles before the contaminant level got even close to being in need a change.
I have to agree with you about some discussions growing and getting off track which some consider Hijacking. Oh well, I enjoy talking with others who are knowledgeable on numerous subjects.
At 71 it will take solid proof to change my preferences on either gas or oils. My old and long gone F250 with the 7.3 diesel turned 4 gallons of Rotella into sludge in just a few thousand miles and I hated every change.

If you sent that oil in for analysis as a "one time shot", it was essentially worthless information.... You would have to have known the "baseline" for that engine. How many PPM would have been normal for that engine to shed in aluminum, brass, iron, lead etc in a normal oil change interval. All engines shed metal during an oil change cycle, it is how much and what it is shedding that counts. You wouldn't have known that if the sample was on a one time basis, because you couldn't compare it to the last three oil samples.

The two main #'s to pay attention to on an oil report are the TBN (Total Base Number) and the TAN (Total Acid Number). Acidity of the oil is the key. Virgin Delo 400 has a TBN # of around 12 and a TAN # of essentially zero. As the oil runs the TAN # starts to climb and the TBN # starts to drop. When the two numbers intersect on a graph, that's when it's time for an oil change. When you're looking to extend oil drain intervals in a fleet (cuts downtime, labor/material cost) you look to push that # to around 4

I could run Delo 400 to around 40,000 miles in a pre-2010 emissions long haul truck (DPF only) and they'd come back with TBN/TAN intersect of around 4. With the addition of DEF to emissions systems after 2010, it's gone up even more. In a 2023 DD-15, Detroit says 60,00 mile oil change intervals on long haul trucks and you're still good on warranty.

I'm 70 and retired 5 years ago, but spending $400,000 a year on oil analysis for a fleet of 1,200 long haul trucks was all the "solid proof" I needed to convince me to run Delo 400..... Plus I actually know the "magic juice" that's in it

Rotella is the #1 selling diesel oil in the world. 80% of all Rotella oil is sold in 1 gallon jugs. What's that tell you? It's "Truck Stop" oil.... Big fleets draw their oil out of 500 gallon bulk tanks, not 1 gallon jugs, and Shell oil Distributors won't hardly deal on their bulk pricing so it's about 20% more than Delo 400 through their Distributors. I've always said Shell has gotta pay for all that BS advertising some how when their Sales Reps showed up in my office....

GaryL said:

I'll take 6 of one and a half dozen of the other. I've also had a few Toyota pickups and liked them as much or maybe more. My last F250 developed an issue even the dealers had a tough time with called the "death wobble" and that by itself turned me away from Ford. As we speak I am in the market for a new pickup and still undecided which model or brand I might go with. I don't need the big power/towing like I used to but I do need the 4X4 for the winters in these parts. I don't want the base model but I also don't need all the fancy electronics most now have. T Rex don't Text and all that fancy garbage just adds $$$ and useless stuff IMO.

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Yep, I hear you about all the BS on new trucks. Dodge in the back ground has 170K on it, so I baby it, the Willys only has 40K on it