There is some confusion as to how the ASTM process compares to Supplemental Type Certificate (STC) approval for the unleaded fuels that will replace 100LL. Some people even think that they are basically the same. In reality they are very different and most of that difference goes back to our old friend liability.
Visser's Voice
Can I mix different brands of oil in my aircraft’s engine?
While conventional wisdom says you shouldn’t mix different brands of oil in your aircraft engine, our expert says otherwise.
Is it OK to cruise with an oil temperature of 245°?
I like this question because I can give a definite answer: No.
Can I use oil that’s 15 years old?
As with so many other things in aviation — and in life — the answer is not a simple yes or no.
Would a synthetic oil be beneficial to my RV-7A’s engine?
I have an O-360 Mattituck (experimental) engine installed on my RV-7A. I have been using Aeroshell W100 Plus for more than 15 years. I have been using mogas solely for more than 10 years now, so no fear of lead deposits. This is my question: Would the use of fully synthetic (racing) oil be beneficial?
The elephant in the room
As the quest to find an unleaded replacement for 100LL continues, why isn’t the government and industry getting behind a fuel that’s already been tested and approved?
If the glove fits…
Did you know you should wear rubber or latex gloves when changing your airplane’s oil? It’s important to protect yourself from the used oil and the harmful things that can accumulate in the oil from the combustion process.
A different kind of grounded
One of the biggest concerns for general aviation aircraft is where to connect the grounding or bonding cable when refueling.
What you need to know about oil analysis to protect your airplane
Oil analysis can be a very effective tool if used properly. What do you need to know to get the most out of an oil analysis?