Give it a full tune-up.
burn the car
Lean burn refers to operating a gas turbine with excess air to optimize fuel efficiency and reduce emissions, while rich burn involves adding more fuel to the combustion process to increase power output. Lean burn technology is typically used for low emissions and increased efficiency, while rich burn is used for higher power output and faster response times.
A forest burn will provide ashes that are rich in minerals to support the grasses that will soon grow there.
Yes. To burn a compound you need a halogen with a higher energy than the one in the salt. So if you put sodium chloride in a fluorine rich environment and apply a flame it will burn.
too much fuel, excessive oil consumption
There are show great things you can use. One of them is to use Fuel Infusion. It helps your engine burn fuel more efficiently. Most cars burn their fuel at 93-97% efficiency.
You may be asking about delivery time. We do not sell head gaskets so we do not know. You may be asking about the size of Subaru head gaskets. The answer is "long enough to fit". You may be asking about the amount of time they are guaranteed. Check with your dealer or warranty manual. Lastly, you may be asking how long they will last. Reminds me of my childhood when I was really worried about the potential for our house to burn down and wanted to know when it will burn. The answer is that it may never burn down or may burn down tomorrow. Same answer for head gasket malfunction.
metal rubbing against the tire
Trouble code P2097 means: Post Catalyst Fuel Trim System Too Rich Bank 1
If you do a really good job of it ... you end up with a carbon rich residue.
You cant burn exhaust valves by going rich. If the system went lean or timing were too advanced then combustion chamber temps would go way up and burn the exhaust valves.
Subaru is the car company...