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Thanks for testing all these products and sharing your findings! Archoil AR6900P is marketed for adding more detergents to fuel at every fill-up--what some folks here call a "maintenance dose." Would you be willing to do more tests on AR6900P? I want to understand how much detergent is added...

Small amounts of water in the oil should boil off in the crank case and its vapor evacuated through the PCV. Water is a byproduct of normal combustion. In modern engines, some of it will blow by into the crank case. Grandma vehicles that never get up to temp, especially during the winter, have...

I'm not a Petroleum Chemist, and don't claim to be an expert here. My approach was to somewhat mimic CRC's formula, which is known to work well. Knowing CRC, they would have tested multiple combinations, and decided that this concentration (somewhere between 5% and 15% according to the SDS) of...

I am very curious how this works out and what your process looks like. I've had good luck so far with the CRC GDI IVD cleaner spray, but have been looking into induction bottles and liquid intake cleaners. I tried getting my paws on a Toyota (or Subaru) Top Engine Tool, but they've been on...

The Gumout product line is confusing, so I made myself a spreadsheet based on SDS info. I think they change the colors of the labels every now and then, or perhaps for retailers. Updated the prices from Walmart.com today... holy crap prices went up, and normal Techron now comes in a 10 oz...