Spec Lookup - AutoChartGuide (Page 2)

Parts Cross-Reference

Superseded Part Number Meaning: What Replaced Your Part

A superseded number points to a newer one, not a dead end. Why it happens, when the new part is not a drop-in, and how to trace it.

Spec Lookup

Mid Year Model Change Car Specs: How to Tell Yours

Mid year model change car specs explained: why makers change parts and figures partway through a year, and how to tell which version you have.

Car A/C refrigerant label showing R-134a and examples of R-1234yf and R-744 refrigerant types

Fluids, Refrigerant & Chemicals

What Refrigerant Does My Car Use? Check the Label

Your vehicle states it on a label under the hood. A chart cannot answer this reliably: the transition happened at different points for different cars.

Spec Lookup

Same Car Different Specs by Country: Does Yours Apply?

Same car different specs by country? Why US, Canadian, European and JDM versions differ, and how to confirm a figure fits your car.

Blue car beside a car specifications website showing vehicle details from manufacturer data, official documents, and third-party databases

Spec Lookup

Are Car Spec Websites Accurate? Where the Data Comes From

Are car spec websites accurate? See where aggregator data comes from, which figures hold up, and how to check a number before you rely on it.

ATF and power steering fluid comparison showing when ATF may or may not be suitable

Fluids, Refrigerant & Chemicals

Can I Use ATF for Power Steering? Sometimes. Not Always.

The internet is right about some vehicles and wrong about others. Seal compatibility is the mechanism, and the failure is delayed rather than immediate.

AI car specifications compared with an official vehicle manual showing engine details, horsepower, fuel economy, dimensions, and safety features

Spec Lookup

Can I Trust AI for Car Specs? When to Check the Manual

Can I trust AI for car specs? Learn why chatbot figures go wrong, which uses are safe, and how to verify a torque or fluid spec before you use it.

GL-4 vs GL-5 gear oil comparison showing the differences between the two gear oil specifications

Fluids, Refrigerant & Chemicals

GL-4 vs GL-5 Gear Oil: Higher Is Not Better Here

The numbers describe different applications, not better and worse. In the wrong application the additive package is the problem rather than the benefit.

Blue car illustrating verified car specifications, including engine, performance, fuel economy, dimensions, and safety features

Spec Lookup

Verified Car Spec Source: What It Means Here

What makes a verified car spec source, the four checks a number must pass here, and the figures we refuse to print so you never torque to a guess.

CVT fluid guide showing why universal CVT fluid is often the wrong choice

Fluids, Refrigerant & Chemicals

CVT Fluid: Why Universal Is Usually Wrong Here

A CVT transmits torque through friction at a belt or chain contact, so the fluid's friction behavior is part of how the transmission works, not incidental.

ATF transmission fluid comparison showing multi-vehicle coverage, OEM licence, and owner’s manual specifications

Fluids, Refrigerant & Chemicals

What ATF Does My Car Take? Coverage vs Licence

A bottle listing 40 vehicles is making a coverage claim. A licensed specification is a different kind of statement, and only one of them is checkable.

DOT 3, DOT 4, and DOT 5 brake fluid comparison showing different formulas and compatibility warnings

Fluids, Refrigerant & Chemicals

DOT 3 vs DOT 4 vs DOT 5: The Numbers Are Not a Ladder

DOT 5 is silicone based and not compatible with the glycol fluids either side of it. DOT 5.1 is glycol based despite the number. That is the whole trap.