We’re pros at doing an oil change, so you can get in and out of our shop quickly. Our skilled mechanics have been keeping Milwaukee vehicles running smoothly since 1972.

What Does an Oil Change Do For Your Car?

Motor oil is the fluid that goes into your engine to keep it running smoothly. It lubricates the different parts of the engine and prevents the metal components from grinding against each other. 

Oil also provides a protective barrier around moving parts by holding debris and and other deposits in suspension, keeping them from getting stuck somewhere problematic. Over time, the oil can get quite dirty. Dirty oil causes problems in your engine because it loses a lot of its lubricating ability. If you don’t replace it, then your engine will wear and tear a lot quicker.

How Often Should You Get Your Oil Changed and Why?

We recommend you get your oil changed at least every 3,000 miles, but you should refer to your vehicle’s owner’s manual for a more specific number. Every car is different, and everyone drives their car in different conditions.

The benefits of oil changes can be great and help keep your car running longer.

Oil changes …

  • Fight against the main causes of engine breakdowns: heat, deposits, sludge, and friction

  • Protect your engine from wear, rust, and corrosion

  • Help to maintain your vehicle’s warranty

Other Parts of The Oil Change Service

Yes, we change your oil. But we also do so much else, including:

  • Replace oil filters

  • Lubricate all fittings

  • Fill and top-off all fluids

  • Check air filters

  • Inspect engine for leaks

  • Ensure belts and hoses are in working order

  • Check tire pressure

Contact Ray’s OK Service to book your next heating and air conditioning repair appointment!

When you keep your car in top running condition, you will save time and money in the long run. A well-maintained vehicle provides safe travel for you and your family, giving you security and peace of mind.


Welcome to Ray’s OK Service. Conveniently located in Greenfield, Wisconsin on Loomis Road at I-894. We specialize in the maintenance and repair of foreign and domestic vehicles. Ray’s OK Service originally opened in 1972 by Ray Kurian Sr. and sons.  As a family, they built a thriving auto repair business.  A company that prides itself on skilled automotive repair services, up to date technology, fair honest pricing, and cordial customer service. Now serving 3rd Generation Customers!!

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