performance - OilSpec Guide

OEM Approvals

Ford EcoBoost and Spec Matching: Why ‘Close Enough’ Can Backfire

risks of mismatched specs

The truth about Ford EcoBoost and spec matching reveals how small differences can lead to unexpected performance issues, making it crucial to understand why “close enough” isn’t enough.

OilSpec Guide Team
March 3, 2026

Viscosity & Grades

High Temperature, High Shear: Why HTHS Isn’t the Same as ‘40 Weight’

high shear oil viscosity

A explains why HTHS viscosity differs from traditional ’40 weight’ ratings and how it impacts your engine’s protection—discover the full story to stay informed.

OilSpec Guide Team
February 5, 2026

Viscosity & Grades

Viscosity Index Explained: The ‘Stays Stable’ Claim You Can Actually Test

testing viscosity stability

An in-depth look at the viscosity index and how you can test its stability to ensure optimal engine performance.

OilSpec Guide Team
February 5, 2026

top uv leak detection kits

Vetted

10 Best UV Dye Leak Detection Kits for Professionals in 2027

Compare 10 professional UV dye leak detection kits for HVAC and automotive work, with…

OilSpec Guide Team
November 7, 2026

top 15 pump recommendations

Vetted

11 Best Transmission Fluid Transfer Pumps for 2027

Compare 11 transmission fluid transfer pumps by capacity, power source, adapter…

OilSpec Guide Team
November 7, 2026

top vacuum pumps for oil

Vetted

7 Best Vacuum Pumps for Oil Sampling in 2027

Compare seven vacuum pumps for oil sampling by hose fit, kit contents, controls, and…

OilSpec Guide Team
November 7, 2026

top transmission temperature scan tools

Vetted

7 Best Transmission Fluid Temperature Scan Tools for Service in 2027

Compare seven scan tools for transmission fluid temperature checks, service workflows,…

OilSpec Guide Team
November 7, 2026