A Core deposit is a form of deposit you pay until returning your old part. If you don't have the core at the time of purchase, you must pay the core charge. That charge is refunded to you when you return the core.
Blend of fine, particle-size metals dispersed in a synthetic grease, designed to withstand very high temperatures and extreme pressures. It is particularly effective for use on bolts both for assembly and disassembly and where metal parts rub together.