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Sounds like we have a "few" tuner wanna bees. I've used the top end stuff of various brands and NONE of them work worth a damn.
The "pssssss" is NOT press, it's vacuum. Also any time you put anything of a lessor viscosity into your oil it will lower it. Plus oil has detergent in it. You guys can do whatever you want, but if you don't even know where the booster vacuum line is let alone what it does or how it works, should you really even be opening the hood?
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