Metal Treatment Concentrate Engine Oil Additive, 473 ml

Bar none the best additive for engine health and longevity. Can't say more of how it helps performance and keep engine quiet and cooler while extending oil changes.

Great product that has significant results! I had previously been using STP ultra in my vehicles the past 4 years which was an alright product. But after adding Polytron in my 2001 Infiniti QX4 instead, I have noticed a big difference in engine performance. The engine sounds more quiet and feels much smoother as well as improved fuel economy and restored HP. I like the fact that it cleans the engine and keeps it clean from sludge and other deposits, not to mention that it treats the metal of the engine reducing friction, as opposed to other brands of oil additives which usually just treats the oil. You wont get results instantly but you will notice the difference after putting at least 50 miles or so after you add polytron. Great if you have a lot of mileage on your vehicle. I would reccomend this product.

Been using polytron for years. No way to quantify if its really extending my motors life, but I've never had issues when treating with it regularly. I trust the science behind it and it can only help.

it's currently in the engine. I wont know how it's performing till after the second round application but the engine already feels smoother after a few hundred miles. Cold starts are a bit smoother also and a few degrees average drop in temps

I put 1/3 of the bottle in a 2012 Odyssey and 1/3 in a 2005 Suburban 1500 (5.3 ls). The Suburban and Odyssey already had half a bottle each of Slick50 in them, with synthetic mobil1. On the first drives after adding it, their idling RPMs dropped by about 50-100rpms each. On the Suburban (230,000 miles), the already deep and pleasant, "nah nah nah" sound of the idling motor was replaced by an even deeper "wa wa wa" sound that tricked a longtime multiple 5.3ls engine owner into insisting that I actually had bigger 6.0 motor, based on the sound alone. I also don't hear any more higher pitched rattling or scrapey noises when the motor starts, and so my 20 year old motor with nearly a quarter million miles, that was a cheap restored salvage vehicle anyways, now sounds amazing. So...I'll likely keep buying more of this as I now think it actually helps.