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A bit confused on which metals are purposely used to make engine oil and metals that are considered wear metals. The reference numbers for the 2grfe uoa are almost 7,000 miles and my oil only had about 4,300 on the it. Mine indicates 1 on tin, where the average 2grfe with almost double the miles...

Pertaining to piston soaks I've concluded that this product is the most effective to dissolve hard carbon deposits on piston tops, but I remember reading somewhere on berryman's own site that it should not be used for more than a few hours due to coated aluminum being damaged by the soak, also...

I've always wondered how piston rings (compression and oil rings) keep contact with the cylinder walls, do they have springs or something, and from what I've seen they are not solid rings, they have a little gap presumably the only way they can be installed , would this always leave a small gap...

I often hear people say anything with oil in it, which would include marvel mystery oil , gumout fuel system cleaner, lucas ect...lowers the fuel's octane, but I thought lower octane fuel is easier to ignite, not harder, would anything added to fuel (such as pale, light oil in some fuel...

I have an obd2 app on my phone , you don't have to start the engine to get some basic readings like coolant temp, engine codes ect.. My car has been sitting for almost 2 days without being started, Its been just above freezing 34-40F, I had to get some stuff out of it today and was curious what...