Engine Oil Analysis - OilSpec Guide

Engine Oil Fundamentals

TBN vs TAN: The Two Numbers That Explain ‘Oil Life’ Better Than Mileage

oil health indicators comparison

Keen understanding of TBN and TAN reveals true oil health, ensuring optimal engine performance—discover why these numbers matter more than mileage.

OilSpec Guide Team
February 5, 2026

floor jack types comparison

Garage Setup

Floor Jack Buying Guide: Low-Profile vs Long-Reach Explained

I’ll help you understand the key differences between low-profile and long-reach floor…

OilSpec Guide Team
March 26, 2026

top garage floor scrubbers

Vetted

15 Best Garage Floor Scrubber Machines for 2026

Clean and conquer your garage mess with our top 15 garage floor scrubber machines for…

OilSpec Guide Team
March 26, 2026

top 12v atf transfer pumps

Vetted

15 Best 12V Fluid Transfer Pumps for ATF in 2026

If you’re looking for the 15 best 12V fluid transfer pumps for…

OilSpec Guide Team
March 26, 2026

official certification and documentation

Label & Documentation

Certificates and ‘Letters’: What a Real Approval Document Usually Looks Like

Secure your understanding of authentic approval documents and discover what makes…

OilSpec Guide Team
March 26, 2026