We haul our latest 30' Flying Cloud with a 2008 2500 Suburban with the 6.0 liter engine. While we definitely notice the additional GW of 1,500 lbs over our earlier International our desire to move to a 2500 diesel pickup is not in the cards at the moment.
So, in traveling out west last summer/fall we experienced a very slow go in a couple of steep elevation climbs. We are talking about 1st gear at 3,000 rpms. We also found that in many remote locations only 85 octane fuel was available. The recommended octane for Suburban is 87. But, sometimes 89 octane would be available as well.
At an oil change stop I asked the Chevy dealer about that and they said that in that particular vehicle they recommend the 85 as long as we did not experience pre-ignition which we did not.
Upon getting home, a knowledgeable friend thought that we ought to burn high test in those situations since given the altitude and fuel we probably were losing 20% of our horsepower.
I don't mind spending the money on higher octane fuel if it will make a difference and does not create some other problem. Thoughts? Thanks, Jack
So, in traveling out west last summer/fall we experienced a very slow go in a couple of steep elevation climbs. We are talking about 1st gear at 3,000 rpms. We also found that in many remote locations only 85 octane fuel was available. The recommended octane for Suburban is 87. But, sometimes 89 octane would be available as well.
At an oil change stop I asked the Chevy dealer about that and they said that in that particular vehicle they recommend the 85 as long as we did not experience pre-ignition which we did not.
Upon getting home, a knowledgeable friend thought that we ought to burn high test in those situations since given the altitude and fuel we probably were losing 20% of our horsepower.
I don't mind spending the money on higher octane fuel if it will make a difference and does not create some other problem. Thoughts? Thanks, Jack
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