Random fact:
My subaru *can* run on 91 octane, but the owner's book says to put in a bottle of fuel system cleaner every 6,250 kms (half of a service interval).
I couldn't find any in shops so I rang the Subi dealer. They said "yeah we stock it, but we don't recommend it, just run your car on 95 octane, it will keep it cleaner".
These guys could make money selling me this stuff, so for once I believe them.
So I was wondering if using El Cheapo gas might be dirtying up the system and causing these symptoms. Just checking the basics.
Wait - there
is fuel in it, isn't there?