Diesel truck guys....

[Ol'55]

Looking for opinions or some hard facts related to pump gas. I've always bought the best Top Tier Gasoline I could find for all of my gas powered cars and equipment. Shell is the only Top Tier Gas within my area of the world and I religiously bought Shells gas for the Vettes (93 octane, and 87 for the DDs and yard equipment) and thought well of it until recently when everything I owned with a carburetor (except the two stroke stuff) ran in a lean condition (the snow blower needed 1/4 choke to run correctly!!) with the EFI cars not missing a beat, but maybe experienced the very same conditions but electronically hid the symptoms? This seemed to happen along the same time I saw Shell advertising the goodness of their Nitrogen Enriched gasoline? I'm just wondering if anyone here could add any info or opinion into the mix. I DO like the claims in favor of Top Tier rated gasoline, but not if this Shell gas is changing the air fuel ratio beyond what the carburetors in the yard equipment want to mix (and likely the EFI in our cars/trucks too?) I recently filled the house gas can with Citgo regular (NOT a Top Tier rated gas) and the yard equipment runs fine with no strange choke settings required. The problem gas was noted back in Summer (the lawn mower) but was fresh and stabilized with Sea Foam as I have always Sea Foamed the house can and all of our cars (so stale gas was not the issue). My next gas buy will be Shell regular for the house can just to see if the lean condition returns.

Now my question is this. If the 93 octane that we are buying for the Vettes has laid in the tanks for God knows how long cuz folks aren't going to pay the price for Premium gas is in fact stale, would it be better to buy the more used 87 octane gas and add boosters to raise the octane yet achieve a better quality of gasoline in the process? NOTE; This octane mix question has nothing to do with the lean condition I mentioned at the beginning of this post.

Your slant?