John Baker

Recent Posts by John Baker

Do I need a Diesel Coolant Additive?

Semi trucks lined up

Adding a diesel coolant additive, or supplemental coolant additive (SCA), midway through the service interval is easy to overlook and fraught with problems. Here’s a better way.



What Does Horsepower Mean?

Challenger burnout

One horsepower equals 33,000 ft·lbf/min (about 745 watts). We explain what it all means – and its connection to the London beer-making industry – here.



A Beginner’s Guide to Motor Oil: What You Need to Know

Pulling oil dipstick

Motor oil seems simple. You pour it in your engine and drive away. But motor oil is far more complex…and important. Here’s what you need to know.



Should I Run Straight-Weight or Multi-Weight Oil in my Muscle Car?

Mopar muscle car

Straight-weight oil can offer some benefit with viscosity retention, but a good multi-weight oil delivers better start-up protection.



How Start-Stop Engines Challenge Motor Oil

Car at stop sign

Start-stop cycles in equipped engines can triple compared to traditional engines, increasing the likelihood of bearing wear.



What Does Viscosity Mean (and How Does it Affect Your Engine)?

Motor oil pouring into engine

Viscosity is the measure of a fluid’s resistance to flow. How quickly or slowly motor oil flows affects how well it protects your engine.



AMSOIL Runs on Freedom™ Limited Snowmobile Warranty

Snowmobile warranty

The AMSOIL Runs on Freedom Snowmobile Warranty covers engine repairs for two years or 5,000 miles (8,000 km), whichever comes first, on qualifying sleds.



Can We Still Go Fishing? Wisconsin DNR Interview

John Gillespie

How does Wisconsin’s “shelter-in-place” order to combat the spread of COVID-19 affect fishing throughout the state? Find out from the state DNR.



Why is there Sludge/Slime in my Radiator?

Radiator sludge

Radiator sludge is a symptom of larger problems, many of which are traced back to using low-cost “green” coolants. Here’s what you can do.