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While I understand the conventional wisdom of filling the tank completely before storage to prevent in-tank condensation, I just keep about a half tank. A full tank will ensure that I spend half of the next season with old-ish gas and I never run a full tank anyway just as a weight savings (!) In the spring I add a bottle of Tecron followed by 4-5 gallons of fresh Shell 93, start and stop the car abruptly 6-8 times or so and circle a roundabout a few times (got to get those tires scuffed a bit) to get it mixed up and then take a long drive. It’s my understanding that the techron will cause any moisture drops from the top of the tank to go into solution therefore getting burned without worries about a “slug”. And then a few years ago the tank moisture theory thing got to me and I started using Stabil. Then just this spring I noticed this milky/waxy stuff and jumped to blame it on the Stabil. My buildup certainly could have been a bad batch of gas (residue from the bottom of the storage tank) and not the stabilizer. In fact after a little more research it seems more likely than not. So perhaps sorry Stabil, but just in case, I’m personally dropping it. Having designed several underground fueling stations it is certainly possible to get a bunch of residue from the bottom of the tank that may have sat for a very long time. The storage tank filters are not that fine so they don’t clog up too fast and inconvenience the vendor. A U-tube guy stated that if you see a fill truck at your local station, go somewhere else as the fill process can stir up the debris at the bottom of the tank. Makes sense to me. I used only Sunoco 94 until it went away and have since used only Shell premium 93. This brings to mind if almost half of my driving is done with Tecron in the tank – am I unduly flushing my cylinders walls? Maybe – since the Shell 93 is supposed to have a cleaner in it, I should possibly drop the Tecron also and not worry about the in-tank moisture as I’ve never personally had a hint of a moisture issue with the Sunoco or Shell products. Thanks for the Carbag tip - way better than my standard baggies on the tail pipes and a foam plug for the left vent.

<blockquote data-quote="TANTO" data-source="post: 2085482" data-attributes="member: 39234"><p>While I understand the conventional wisdom of filling the tank completely before storage to prevent in-tank condensation, I just keep about a half tank. A full tank will ensure that I spend half of the next season with old-ish gas and I never run a full tank anyway just as a weight savings (!) In the spring I add a bottle of Tecron followed by 4-5 gallons of fresh Shell 93, start and stop the car abruptly 6-8 times or so and circle a roundabout a few times (got to get those tires scuffed a bit) to get it mixed up and then take a long drive. It’s my understanding that the techron will cause any moisture drops from the top of the tank to go into solution therefore getting burned without worries about a “slug”. And then a few years ago the tank moisture theory thing got to me and I started using Stabil. Then just this spring I noticed this milky/waxy stuff and jumped to blame it on the Stabil. My buildup certainly could have been a bad batch of gas (residue from the bottom of the storage tank) and not the stabilizer. In fact after a little more research it seems more likely than not. So perhaps sorry Stabil, but just in case, I’m personally dropping it. Having designed several underground fueling stations it is certainly possible to get a bunch of residue from the bottom of the tank that may have sat for a very long time. The storage tank filters are not that fine so they don’t clog up too fast and inconvenience the vendor. A U-tube guy stated that if you see a fill truck at your local station, go somewhere else as the fill process can stir up the debris at the bottom of the tank. Makes sense to me. I used only Sunoco 94 until it went away and have since used only Shell premium 93. This brings to mind if almost half of my driving is done with Tecron in the tank – am I unduly flushing my cylinders walls? Maybe – since the Shell 93 is supposed to have a cleaner in it, I should possibly drop the Tecron also and not worry about the in-tank moisture as I’ve never personally had a hint of a moisture issue with the Sunoco or Shell products. Thanks for the Carbag tip - way better than my standard baggies on the tail pipes and a foam plug for the left vent.</p></blockquote><p></p>

[QUOTE="TANTO, post: 2085482, member: 39234"] While I understand the conventional wisdom of filling the tank completely before storage to prevent in-tank condensation, I just keep about a half tank. A full tank will ensure that I spend half of the next season with old-ish gas and I never run a full tank anyway just as a weight savings (!) In the spring I add a bottle of Tecron followed by 4-5 gallons of fresh Shell 93, start and stop the car abruptly 6-8 times or so and circle a roundabout a few times (got to get those tires scuffed a bit) to get it mixed up and then take a long drive. It’s my understanding that the techron will cause any moisture drops from the top of the tank to go into solution therefore getting burned without worries about a “slug”. And then a few years ago the tank moisture theory thing got to me and I started using Stabil. Then just this spring I noticed this milky/waxy stuff and jumped to blame it on the Stabil. My buildup certainly could have been a bad batch of gas (residue from the bottom of the storage tank) and not the stabilizer. In fact after a little more research it seems more likely than not. So perhaps sorry Stabil, but just in case, I’m personally dropping it. Having designed several underground fueling stations it is certainly possible to get a bunch of residue from the bottom of the tank that may have sat for a very long time. The storage tank filters are not that fine so they don’t clog up too fast and inconvenience the vendor. A U-tube guy stated that if you see a fill truck at your local station, go somewhere else as the fill process can stir up the debris at the bottom of the tank. Makes sense to me. I used only Sunoco 94 until it went away and have since used only Shell premium 93. This brings to mind if almost half of my driving is done with Tecron in the tank – am I unduly flushing my cylinders walls? Maybe – since the Shell 93 is supposed to have a cleaner in it, I should possibly drop the Tecron also and not worry about the in-tank moisture as I’ve never personally had a hint of a moisture issue with the Sunoco or Shell products. Thanks for the Carbag tip - way better than my standard baggies on the tail pipes and a foam plug for the left vent. [/QUOTE]

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