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Compatibility & Mixing

32 posts
  • Compatibility & Mixing

Switching Oil Brands: The Real Risks (and the Imagined Ones)

oil brand change risks
When switching oil brands, weighing real risks against perceived ones reveals surprising truths about your engine’s health and longevity.
  • OilSpec Guide Team
  • February 5, 2026
View Post
  • Compatibility & Mixing

Can You Mix Different Viscosities? The Safe ‘Top-Up Rule’ Explained

mixing viscosities safely
Discover how mixing different engine oil viscosities can affect your engine and learn the safe ‘top-up’ rule to protect your vehicle’s performance.
  • OilSpec Guide Team
  • February 5, 2026
View Post
measurement methods and discrepancies
  • Oil Analysis & Diagnostics

Particle Counts vs Spectrometry: Why Two ‘Clean’ Reports Can Disagree

Particle counts and spectrometry offer different insights into air quality;…
  • OilSpec Guide Team
  • May 15, 2026
one test result inconclusive
  • Oil Analysis & Diagnostics

TBN Trend Watching: Why One Test Result Doesn’t Mean Much

Many single test results can be misleading; discover why tracking multiple results is…
  • OilSpec Guide Team
  • May 15, 2026
oxidation and nitration indicators
  • Oil Analysis & Diagnostics

Oxidation and Nitration Numbers: What They Suggest (and What They Don’t)

Gaining insight into oxidation and nitration numbers reveals their clues about electron…
  • OilSpec Guide Team
  • May 14, 2026
top garage fireproof safes
  • Vetted

15 Best Fireproof Document Safes for Garage Workshops in 2026

Find the top fireproof document safes for your garage workshop in 2026 and discover…
  • OilSpec Guide Team
  • May 14, 2026
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