As a fully synthetic clear 5W-30 oil made from natural gas, this pick can keep your snow blower engine up to 45 percent cleaner than standard oils. Pennzoil Platinum comes in 1-quart, 5-quart ...

Pennzoil-Quaker State Company, a subsidiary of Shell plc, and Blue Tide, a company developing a network of used motor oil (UMO) re-refining facilities ...