Piper 1, after 30 years then you should know that engine oil goes from a clear amber to black within the 1st couple of weeks after an oil change because of soot contamination. Soot is hard particles of carbon. It is abrasive and causes metals to "scrub" or wear. That is why engine oil by-pass filters are becoming so popular - they are more effective in filtering out soot particles than standard oil filters. And this extends the engine life and increases the oil change interval. Smart engine owners know this and take measures to eliminate soot accumulation in engine oil by using either EnerBurn or a by-pass oil purifier alone or in combination. They have the oil analyzed periodically instead of changing it. They drain the oil only when the oil analysis flags a sample for high wear metals, high soot, high fuel, or low viscosity. They can invest in more expensive, better quality synthetic engine oils knowing that it will stay clean for an extended oil change interval allowing them to recoup the investment or get a good ROI. Owner operators ARE business owners, thus have a different mentality when it comes to engine maintenance than most fleet managers I've encountered.
After 30 years I also know oil color has almost zero indication of contamination. Oils in the last 10 or so years in diesels built in the last 20 years, turn dark from heat and oxidation long before soot is even a remote problem
As far as your ROI statements and fleet managers goes, let me say this. A very very large fleet with orange trucks spent hundreds of thousands of dollars testing and equipping its tractors with drive wheel covers. The testing (and it was very thorough) yielded a best case scenario of a 1/4 mpg improvement and a more realistic 1/8 mpg improvement...so based on thier fleet average...this was going to be a 1 to 2% at most improvement. Based on that...they went ahead and equipped the whole fleet...because at thier scale of size...it paid...barely. They also run very extended oil drains and have for years. They are so focused on ROI they have a 6 step process to determine if something as simple and cheap as a hubcap gasket should be changed or left alone. What additives do they run? I've listened to talks given by this company's fleet manager...actually the head of vehicle engineering is his title....and he and members of his team have the degrees to back it up...and then they send thier studies to the purchasing guys...who count out to many many decimal places, to be audited.
We can debate the semantics of soot....but soot comtamination of oil is an oil problem long before it is a wear problem...causing oil thickening and sludge...both things that are easily recognized in used oil analysis...and both things that oils of the last 15 years handle with ease....at very extended intervals and can also do so without bypass filtration. In a fleet I personally managed, that oil was sampled at EVERY change...I began to be concerned about the cost of servicing the trucks that had bypass filters on them. Of the 45 trucks that had the bypass filters, we removed 5...then 10...then 20 and eventually all of them. What did we see in the oil samples? Not a dang bit of difference...and the truck lived happy fleet lives into 7 figures on the odometer. Am I saying bypass filtration is bad...no...but I did the ROI and even with running double the engine manufacturers oil service recommendation...they didn't pay...based on real testing. We tried many many fuel additives too....none could justify the 4 to 10 cents per gallon they added to the cost of fuel...and 90% of them didn't do a darn thing. When you asked for the exact studies to back up thier claims...many were based on old or obselete engines....or non highway tests.
Reading your website I see test data is based on a 3512 Cat stationary engine...and also one running Tier 2 emission controls. For those reading who may be unfamiliar...a 3512 is a large industrial engine that is no longer produced...and we are now at Tier 4 as far as emission regs are concerned. Tier 2 didn't even require a DPF.
All that said....I wish you well and I will say, based on the pricing on your website...as far as additives go your pricing is pretty good at around 8 cents per gallon of additional cost to treat the fuel...the last additive I tested had a retail cost of $300 a gallon...and a treated cost of close to 17 cents a gallon....it provided a small benefit...but nowhere near enough to justify the cost.
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