Join Date: Feb 2017
Location: St. Louis, Missouri
Antiseize is basically an oil with powdered aluminum or copper--soft metals which serve to prevent the oil from running, and the alum or copper act as a sort of bearing surface between internal and external threads. It also serves to prevent corrosion between threads. 2 different metals in an acidic environment leads to electrolysis, and a sort of "slow-motion welding" between threads. Grease is just a heavy lubricant that resists running.
In the past, I would use the regular aluminum antiseize--primarily on exhaust studs, bolts, and nuts. About 15 years ago I switched to the copper antiseize. Even though most spark plug manufacturers caution against the use of antiseize on their plugs( can cause a problem with heat transfer and interfere with the plug's ground circuit) many still use it. The aluminum type would turn to concrete, makeit difficult to remove plugs that had been left in aluminum heads for far too long an interval. The copper type stays wet for seemingly forever. The copper type is also referred to as "Brake Lubricant", and works well on brake shoe contact areas of the brake backing plate, brake caliper sliding pins, and the steel brake pad point of contact with the caliper. Permatex is the brand I primarily use.
On motorcycles it works especially well on exhaust studs, exhaust clamps, anywhere heat and/or environment can lead to corrosion. Applying it during assembly or reassembly in might take but a few seconds, but can easily save you from anger, frustration, and added expense during a later disassembly.
Last edited by MAZ4ME; 05-01-2018 at 06:06 PM.