octane effects power and engine temp?

[CoBeerToad]

I keep track of my mpg and maintenance using an app on my iphone..

What's it called?

[j.fro]

The app is called Road Trip:
https://itunes.apple.com/us/app/road-trip-mpg-mileage-fuel/id298398207?mt=8

I think it's one of the best apps I've purchased.

[jdlmodelt]

I added octane booster to this tank till I get all the non 91 octane out. I also changed the oil. I discovered that my oil cap does not seal when it is tightened down. How come these engines have a vacuum at the oil fill tube instead of pressure?

[JFP in PA]

Originally Posted by jdlmodelt

I added octane booster to this tank till I get all the non 91 octane out. I also changed the oil. I discovered that my oil cap does not seal when it is tightened down. How come these engines have a vacuum at the oil fill tube instead of pressure?

The AOS also lowers the pressure in the sump to a vacuum around -5 inches of water so that the low tension piston rings can properly seal.................

[jdlmodelt]

Well, Changed the oil after 7k miles. still look pretty nice. discovered the loose oil cap and remedied that. added the octane booster and also topped off this morning with another 91 octane fuel. and she is running a lot stronger and temperature didn't climb much above 180 driving up in the mountains. I have a 160 degree thermostat. I was pretty nervous a couple of days ago with the acting up. low power, overheating.