During a recent trip to Wally World, I picked up a couple of bottles of Power Service Diesel Kleen (white bottles) because it was time to refill my smaller bottles (I transfer the Diesel Kleen to a bunch of 8 oz bottles to eliminate the measuring out 8 oz when I fill up). When I opened the second (80 oz) bottle of Diesel Kleen, I noticed it was a different color and had a different smell than the first bottle I opened.

I've been using Diesel Kleen in my 2003 6.0 since I bought it five years ago so the difference really jumped out at me. I took a pic of the two 8 oz bottles showing the color difference and sent that off to Power Service's website.

Here's the answer they sent back:

Thank you for taking the time to contact us about our product, Diesel Fuel Supplement+Cetane Boost. Your e-mail below states your concern about the appearance and smell of one bottle of Diesel Fuel Supplement being different than that of another bottle. This is very easy to explain.

Power Service Products evaluates raw material chemicals ongoing to make sure that we are providing the most technologically advanced products available in the marketplace to enhance diesel engine performance. The difference in color and smell that you have observed is simply the result of newer technology in the raw materials used in Diesel Fuel Supplement+Cetane Boost. This product will continue to provide the benefits of exceptional winter performance and lubricity protection for your pumps and injectors. If you would like to prove this to yourself, you can easily test the product at one of many labs that test chemicals for performance. The tests that are applicable are:

· CFPP – Cold Filter Plug Point – The highest temperature at which diesel fuel, when cooled, will stop flowing through a prescribed filter element – measured by ASTM (American Society for Testing Materials) D6371 test methods
· HFRR – High Frequency Reciprocating Rig – measure diesel fuel lubricity – ASTMD6079 test methods
· Pour Point – the lowest temperature at which the fuel will still pour. The Pour Point will occur at temperatures below the CFPP and operability temperature of the fuel – measured by ASTMD7346-07 test methods

I hope that this alleviates your concern about the change in color and smell. As a valued customer and since you took the time to contact us, we would like to send you a free case of our Clear Diesel Fuel and Tank Cleaner. This is our newest product that addresses problems of fuel stability and water that have increased with the introduction of Ultra Low Sulfur Diesel (ULSD). If you would like to receive this free case of product, please respond with your address and we will send it to you.

Please let us know if you have any other questions or comments. Once again, we appreciate your continued business.



Ken Stratton
Sr. Vice-President of Retail Sales
Power Service Products
800-643-9089
817-599-9486
Cell - 817-304-0399

Yup, that answered my concerns...but I thought I'd share just incase anybody else noticed the difference.

Joe

 

I'd be interested in knowing what they changed. Did the recommended mixture ratio change at all?

 

Nope, just an update to the base material. Nothing changes according to the letter.

Joe

 

Must be real recently, the last 80 oz white bottle I purchased looked just like the last stuff I used. Thank you for posting this.

 

Yes, just within the past two weeks. I'd guess that in some places with slower sales, there's probably some of the old formulation out there but since the weather turned up here, I'm assuming we've burned through all of the old stuff. Since then I've bought a third bottle and it too is the lighter color...so we just get used to it.

Joe