So whats the best Octane number for cold weather. Its going to be about 30 below zero this weekend. I know that cold air give more ignition but also uses more gas. Would it be more economical to use a higher octane? if so would it be better to use 90 octane or 91 octane...or just stick to 87 octane? let me know..
Kyle
i notice that my car gets piston knock when the cold weather started around here but once it warms up its perfect so deff let your car warm up to 195 before driving. As far as octane goes, i wouldnt pay the extra for 93 unless you have boost.
^^That could mean you're using too heavy of oil.
Rob
Sold 2/2/05
I put in Esso 91 ... Just because I get 3x the Esso Extra points ...
piston knock when cold is not good. That is an oil starvation, and even though minimal right now, you are doing damage. I would go with a thinner oil or use a block heater. Each little knock it scoring, nicking and producing raw metal shavings and creating loss of compression or equipment failure.
http://www.cardomain.com/ride/2099420/1
piston knock when cold is not good. That is an oil starvation, and even though minimal right now, you are doing damage. I would go with a thinner oil or use a block heater. Each little knock it scoring, nicking and producing raw metal shavings and creating loss of compression or equipment failure. Pining or Knocking from low octane is done at the opposite when the piston is hot and evaporating fuel before ignition or timing is off.
http://www.cardomain.com/ride/2099420/1
Knocking from low octane happen ANYTIME.
And you got it mixed.
When the gas burns before the sparksor because of hot parts, it's pre ignition.
When the gas explode anywhere in the cylinder and not uniformle, that's detonation from high compression.
Gilles
2.3 Ho
I would use 104 unleaded if thats all you can find but 116 leaded is prefered
