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Joined: Apr 2004
Posts: 42,734
Campfire 'Bwana
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Campfire 'Bwana
Joined: Apr 2004
Posts: 42,734 |
Ken,
pulling a heavy load last summer to the east coast, and going up and down over the Sierras and then the Rockies, plus across the flat plains, I tried both 91-92 Octane and plain old 87 octane, didn't make a bit of difference in power, mileage or anything else...
Ran Mobil ONE 0W40 oil in the truck... it didn't use a drop in 10,000 miles, so I doubt if one made the truck run cooler than the other....
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Joined: Mar 2006
Posts: 10,262
Campfire Outfitter
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OP
Campfire Outfitter
Joined: Mar 2006
Posts: 10,262 |
Thank you. You certainly do seem to know how to go drive distances, tow trailers and get multiple lifetimes out of your vehicles.
I saw a movie where only the military and the police had guns. It was called Schindler's List.
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Joined: Jan 2006
Posts: 69,300
Campfire Kahuna
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Campfire Kahuna
Joined: Jan 2006
Posts: 69,300 |
Ken,
pulling a heavy load last summer to the east coast, and going up and down over the Sierras and then the Rockies, plus across the flat plains, I tried both 91-92 Octane and plain old 87 octane, didn't make a bit of difference in power, mileage or anything else...
Ran Mobil ONE 0W40 oil in the truck... it didn't use a drop in 10,000 miles, so I doubt if one made the truck run cooler than the other.... Yes it did make a difference in something. You pants stay up better because the high octane lightens the load in your wallet.
“In a time of deceit telling the truth is a revolutionary act.”
― George Orwell
It's not over when you lose. It's over when you quit.
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Joined: Aug 2010
Posts: 2,332
Campfire Regular
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Campfire Regular
Joined: Aug 2010
Posts: 2,332 |
as a bit of safety, if I am every towing heavy stuff in the mountains where there are long up hill climbs, I run premium. yes there are knock sensors that detune the engine, but I prefer to play it safe in my mind and run that gas. Engines can get fairly hot and cooling systems can get very taxed on a several mile 6% hill. A couple extra bucks in the tank just make me feel better.
“Lighten up Francis”
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Joined: Mar 2001
Posts: 1,796
Campfire Regular
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Campfire Regular
Joined: Mar 2001
Posts: 1,796 |
Does the electronic controlled timing actually advance the timing to compensate for the load? If so you may find you don't have any additional safety buffer with premium vs regular in regards to detonation. Just a thought. For max efficiency I would think the timing is automatically run as advanced as possible for the conditions. Not sure if it works that way but it makes sense.
Sean
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Joined: Apr 2004
Posts: 42,734
Campfire 'Bwana
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Campfire 'Bwana
Joined: Apr 2004
Posts: 42,734 |
as a bit of safety, if I am every towing heavy stuff in the mountains where there are long up hill climbs, I run premium. yes there are knock sensors that detune the engine, but I prefer to play it safe in my mind and run that gas. Engines can get fairly hot and cooling systems can get very taxed on a several mile 6% hill. A couple extra bucks in the tank just make me feel better. My truck is a 4 cylinder with the 2200 RE, so the Fuel INjection is not the newer high tech stuff...but pulling a trailer with a heavy load for that engine, I just kept the RPMs up between the 3K to 4K rpm range.. manual tranny... and as far as overheating.. I don't have to worry about that unless I blow an alternator belt... pulled the factory radiator out when it went south at about 250,000 miles... cost and Additional $40 at the time.. but I put a 4 Core Radiator in it then... I run 70/30 mix in my anti freeze.. and change it when it starts looking crappy... the radiator is all plastic so it doesn't rust... if your rig has a habit of heating up when going over the mountains under load, then put an auxillary cooling fan in front of the radiator, hooked to a toggle switch under the dash...and change to a 4 core radiator...
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Joined: Feb 2005
Posts: 4,455
Campfire Tracker
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Campfire Tracker
Joined: Feb 2005
Posts: 4,455 |
I do know that my vehicles get better mileage with "real" 87 octane gas than with ethanol at 89 octane
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