Ok, I'll bite. I'll use the 109 and 244 on my next oil change and report back. I'm familiar with 109 from my diesel days and it was a great alternative to Sea Foam (which was eventually rebranded by Mazda and sold as "zoom power engine cleaner") when it came to maintaining compression and defeating carbon buildup in the rear rotor chamber. I'm willing to play guinea pig on that one.
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