Techron D Concentrate Diesel Fuel System Cleaner, 20 oz., Pack of 6

I have been using this additive for my Diesel car for ages. I have noticed and Mechanics remarked how clean and efficient my engine had been.

I’ve used the Chevron Techron gasoline cleaner for many years. It’s incredible stuff, far and away the best such product on the market in my opinion. This is my first time using the diesel version. My 2002 Cummins was running fine, but this seemed to noticeably smooth it out. Still only a few gallons into the tank, but I’ll be buying some for my 2014 BMW 535d.

Great for my diesel pick up. Used it as soon as it arrived.

I'm sure the treatment is fine. My issue was that the package I received had (6) bottles, as expected. However, (2) of those were only ~ 62% full (by weight). All still looked factory sealed, but the two that were low were visibly "sucked in". There were no signs of leaking in the box . Weird. Anyways, Amazon was great and refunded my order. See pictures showing still-sealed bottles on my precision scale. One is normal; other is clearly missing a good bit of product.

The best diesel fuel system cleaner I have ever used... Works like magic to restore lost power from a dirty fuel system..

Will continue to buy, think it a good value.

Not sure if it does anything but after using all 6 over a year im getting on average 50 more miles per tank.

The best fuel treatment going. I add an entire bottle every other tank full. Never an engine issue (3.0 Ecodiesel) in 75k miles.