Ryan Gary

Ryan Gary

Ryan Gary is an automotive enthusiast with over 15 years of hands-on experience in the mechanical industry. His passion for engines, vehicle maintenance, and lubrication inspired him to create Engine Oil Journal, a trusted resource dedicated to helping drivers, DIY mechanics, and automotive enthusiasts make informed decisions about engine oils, transmission fluids, and vehicle maintenance. Through well-researched, practical content, Ryan aims to simplify complex automotive topics and help readers keep their vehicles running at their best.

Zerex Coolant Chart(For All Products/Ratio/Use)

Zerex Coolant Chart

Each Zerex product uses a unique chemical technology, IAT, OAT, HOAT, or NOAT, to match OEM specifications and provide the right balance of cooling, corrosion protection, and long-life performance. The table below summarizes all major Zerex coolants, including their chemistry…

STP Oil Filter Fit Chart(Complete Guide)

STP Oil Filter Fit Chart

The STP Oil Filter Fit Chart helps vehicle owners and mechanics match the correct STP filter number to specific vehicle makes, models, and engines. It also assists in identifying equivalent filters from other brands through cross-reference listings. This guide explains…

Coolant Mix Ratio Chart(For All Coolant Types)

Coolant Mix Ratio Chart

A proper antifreeze-to-water mixture ensures that your engine stays within optimal temperature ranges, preventing overheating in summer and freezing in winter. Using the wrong ratio can lead to corrosion, overheating, or even catastrophic engine damage. This post provides a comprehensive…