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Mixing old with new won't hurt anything. If your engine is consuming too much oil, for instance, you would need to add new oil more frequently because you need the right oil level all the time. I have got cars that needed as much as 1L of new oil every 1 or 2 weeks because the oil piston rings where kaput. Nothing happened except $ going down there as ...


6

Use the lithium or silicone grease! Copper grease is primarily used to prevent the seizing of parts which become extremely hot, like the exhaust system. But it is not a lubricant in first place. The grease bounds the copper powder, but isn't made for lubrication, an copper powder in a moving bearing can't be good, even though copper is a rather soft metal. ...


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Two lubes are needed to properly lubricate caliper type brakes. Silicone is used on the slider pins and anything that touches rubber. A generous amount that completely coats the pin, hole wall and rubber expansion boot is needed. Be sure to coat the boot lips that fit in the grooves that hold them in place, this act as a sealant. This lube will not swell ...



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