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Bob Is The Oil Guy

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Forum for oil analysis, recommendations, and DIY guides

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EricTheCarGuy

Free guides and tool advice for DIY mechanics

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How to Change EVERY FLUID in your Car or Truck (Oil, Transmission, Coolant, Brake, and More)

A single 39-minute walkthrough of every fluid service on a typical car: engine oil and filter, automatic transmission, coolant, brake bleeding, power steering, differentials, transfer case, grease fittings and washer fluid.

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Automotive Lubricants Reference Book, Second Edition

Eleven chapters and ten appendices covering base stocks, additive chemistry, engine oil test methods, gear oils, automatic transmission fluids, brake fluids and coolants, with the specification tables and glossary practitioners use as a desk reference.

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The History of Automatic Transmission Fluids (ATF) — Part 1: Introduction

Weber State automotive professor John Kelly opens a multi-part lecture series tracing why automatic transmission fluid specifications exist, how friction modifiers and viscosity requirements changed across generations, and why substituting the wrong ATF causes failures.

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Do Thin Oils Destroy Engines? Lessons From GM's Massive Recall

A 24-minute engineering analysis of why manufacturers specify thin grades, what HTHS viscosity measures, and how oil choice relates to bearing wear, using GM's 6.2L V8 recall as the worked case study.

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The Motor Oil Geek

Lake Speed Jr., an STLE Certified Lubrication Specialist and Oil Monitoring Analyst, breaks down additive packages, base oil groups, oil analysis data, and drain intervals, testing common claims against laboratory results rather than marketing copy.

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