McDonald Oil LLC

The oil filter removes large particulates and dirt from the oil as it moves through the system, extending the life of your oil. But over time, these built up particles can decrease the oil flow, causing engine problems. That's why your oil filter needs to be changed every so often.

Did you know that not all heating oil is produced with the same quality? Quality heating oil which includes lower-sulfur heating oil will provide a higher level of fuel efficiency and can even improve the life of your home heating appliance.

Petroleum-based lubricants actually come in several different forms. They can be liquid (motor and hydraulic oil), semi-solid or solid (grease), or dry or powders (such as dry graphite or molybdenum disulfide).

Unlike other utilities (like gas and electricity) that are run to the house, fuel oil is basically delivered in bulk to your door and stored in a tank. It’s up to you to monitor your usage and ensure that you’ve placed an order for delivery before your supply runs out.

Internal combustion engines have a lot of moving parts, and produce a lot of force from the combustion. That means the parts have to be made of sturdy metal, which will seize up and break from the friction of rubbing together. Oil allows internal combustion engines to function by reducing friction between the metal parts.