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.
Product Features: Performance benefits of XP3 with the price of XP5. A semi-synthetic racing oil that provides a blend of our high zinc content petroleum oils and our full synthetic oils. Designed for clearances under .0030. Applications: IMCA modified engines. Spec engines. Flat-tappet camshafts. Hydraulic lifter engines. Crate motors. Designed for clearances under .0030. Viscosity typical of SAE 10W-40.