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.
Power Service 80 oz Clear-Diesel® Fuel & Tank Cleaner
80 oz Fuel Additive
Advanced Cleaning Technology Power Service Clear-Diesel® Fuel & Tank Cleaner is an advanced fuel tank cleaning technology that has been proven effective in hundreds of fleet, marine, construction and agricultural applications. Clear-Diesel can be used as a vital part of any preventive maintenance program or for immediate clean-up of equipment or fuel storage tanks.