Hey guys, so I usually only fill up with BP 98 and I only get back fires when i change 1st-4th very lazily from 4000rpm?
About three times i've been up north, and needed gas but the only 98 octane fuel I could find was gull force pro 10% ethanol, so i've filled my tank 3x with this stuff.
Recently (last three nights) on the motorway, driving it hard, during gear shifts the exhaust would spit a longish flame , as i had people following me, they said i was shooting flames..
Is this bad for my car (engine)? Is this caused by the gull force pro since i've never shot flames before?
Cheers guys