Originally Posted By: Donald
Originally Posted By: A_Harman
I've been using Power Service fuel treatment for 9 years. I pay $13 for a jug that treats 300 gallons, or the equivalent of 10 fill-ups. That's $1.30 per fill-up, and I only treat the fuel every 2nd or 3rd time. So that's $1.30 spent every 1200 or 1800 miles. I drive the truck on the average 17,500 miles per year, so it's costing me only about $19 per year for fuel treatment.
Well according to this website
http://planetsafelubricants.com/planetsafe-test-results/hfrr-comparison-tests.html
Power Service fuel treatment does not add enough lubricity to pass the US gov. standard of 465 (or below) in the HFRR test. That assumes the diesel fuel had no lubricity when you got it out of the pump. Mostly likely it had some, but maybe not enough.
Thanks for the link. It's made me do some checking, and I find that I'm using the wrong Power Service fuel treatment most of the time. I'm using the stuff in the white jug (Fuel Supplement), which is for temperatures below 30F. It doesn't have lubricity improver. I should be using the stuff in the silver jug (Diesel Kleen) above 30F.
The chart on Planet Safe's website shows that SuperTech TC-W3 does pretty well. I wonder what effect two-stroke oil has on cetane.
And of course, Planet Safe's additives are the best, according to that chart. However, I would like to see some independent test results not done in the company lab before I hang my hat on their results.
But anyway, I've been using the wrong stuff for 9 years and 157k miles, and the truck is still running fine. ULSD came out in 2007, and I've put 120k on the truck since then, yet it continues to run.
I think your concern is unfounded. ULSD has to comply with the wear test requirement of ASTM D975, and comes with lubricity additive from the fuel terminal. What you get out of the fuel pump at the gas station should be safe to run in your engine.