Ryan Gary

Ryan Gary

With a solid foundation of 20 years in the mechanical industry and a Mechanical Engineering degree, Ryan Gary brings a deep understanding of automotive systems to Engine Oil Journal. Driven by a passion for vehicles and a commitment to providing accurate information, he created this platform to empower drivers to make informed decisions about engine oil care.

ZDDP oil chart(For All Oil Brands/Types)

ZDDP oil chart

When it comes to protecting your engine’s internal components, Zinc Dialkyldithiophosphate (ZDDP) plays a crucial role. ZDDP serves as a wear-preventive additive that shields metal surfaces, especially under high-pressure conditions. In this post, we’ll provide a detailed ZDDP oil chart…

Car AC PSI Chart(Complete Guide)

Car AC PSI Chart

Knowing the proper PSI (pounds per square inch) readings can help diagnose performance issues such as insufficient cooling, compressor failure, or refrigerant leaks. This guide explains everything you need to know about car AC PSI charts, including a detailed table…

Transmission Life Expectancy Chart(For All Types)

Transmission Life Expectancy Chart

Knowing the average life expectancy of different transmissions helps you plan maintenance, anticipate replacement costs, and keep your vehicle running efficiently. Below is a detailed Transmission Life Expectancy Chart covering various transmission types, vehicle categories, and their estimated lifespan in…

AC Vent Temperature Chart(Complete Guide)

AC Vent Temperature Chart

Monitoring the AC vent temperature helps determine if the system is functioning efficiently or if there’s a problem with refrigerant charge, compressor, or airflow. This guide provides a comprehensive AC vent temperature chart and explanations of what different readings mean…

ATF Viscosity Chart(For ALL Types)

ATF Viscosity Chart

One of the most critical characteristics of ATF is its viscosity, which refers to how thick or thin the fluid is under various temperature conditions. Understanding the ATF viscosity chart can help you choose the right fluid for your car…