Hot Shot's Secret1 reviews

Sceptical but mostly convinced 26 April 2026

I nearly didn't buy this — I assumed it was just another diesel additive with bold claims. I used to grab things from the big chains but they'd often be out of stock, so I ordered direct to give it a try. I've run diesel pickups and tried loads of additives; most did very little or felt like marketing. After a few tanks in my 2003 and 2012 6.0-litre Power Strokes the engines ran noticeably smoother, less clatter on cold starts and the small hiccups in the fuel supply have mostly gone. It's not perfect — there was still a hesitation under a heavy tow once, and it isn't the cheapest — but the lubricating effect seems genuine. Ordering was straightforward, delivery quick and bottles undamaged. Given past bad experiences with cheap brands, my doubts have largely gone; I'll keep using it but will monitor performance.