Oil Archives - UnderhoodService
Hyundai & Kia Hybrid Drivetrain

The Hyundai hybrid system has a motor control unit (MCU) and hybrid control unit (HCU).

New Oil Specifications

Many 0W16 oils have a new donut certification mark on the bottle called API SN-PLUS and SN-PLUS Resource Conserving.

Domestic Gasoline Engine Oil Specifications

If it’s been more than a year since last oil change, the IOLM will display a reminder message, regardless of mileage.

Compressor Oil for R1234yf

Working on R-1234yf systems is not that different from the R-134a variety.

Oil and Carbon Deposits

Here’s how oil can influence carbon deposits.

Belt-In-Oil Timing Systems

Oil contamination of the belt drive has been a death sentence, due to the rubber and fiber construction of the belt.

Improving Turbocharger Longevity

It is estimated that by 2022, 50% or more of vehicles sold in the U.S. will have one or more turbochargers under the hood.

Severe Drivers – Yes, Your Client Probably Counts As One

Even the most mild-mannered driver may be extreme. This video is sponsored by The Group Training Academy.

Gasoline Cleans Engines But What Happens When It Can’t?

Modern direct-injection technology is great for fuel efficiency but can’t maximize gasoline’s cleaning properties.

Trusted for R&D and factory fill for decades

ENEOS is the largest oil company in Japan, as the “original JDM oil” they’ve been working in partnership with Asian automakers for decades. As part of this partnership, ENEOS has in-house testing facilities where they follow strategies developed with each OEM partner to meet their vehicle and performance specifications, particularly for the tighter tolerances of

Pick The Right Oil Filter For Your Customers (VIDEO)

It is critical that you make sure your customers are getting the right oil filter. Sponsored by The Group Training Academy.

Turbocharged Engine Topics

Turbochargers have made a comeback – and it’s been quick.