Greg... the Green Stuff.....I had an episode of green stuff....
I had been using Amoco 93 octane Clear super, etc, etc for over 10 years....Just before the green stuff occured, I noticed an asphalt smell in the fuel...not typical of Amoco ...Didn't give it much thought. The Airplane sat several months without fresh fuel being added.. On checking the sumps, I began to get a green slime....also a green sludge on the underside of my fuel caps.. I sent samples to Amoco....they responded with " Can't help"...., very little interest. I think what happened is this: Gasoline is shipped by pipeline from refineries in the big inch pipe...along with kerosene, jet fuel, fuel oils, other gasolines, etc. The slug of product is separated by a "contaminated zone". At the storage tank farm, the contaminated slug is removed....supposedly so that all potential contaminated fuel is removed, and that fuel is re-refined, and used as industrial fuels. Now, I think what happened, was that the contaminated fuel was not processed properly, and some of the kerosene/jet fuel/bunker fuel, etc. remained in my dose of Amoco. That was the asphalt smell I noticed. Now fuel oils grow algae...... Jet fuels now have algecides added at the refinery...until lately, the re-fuler added algacide when refueling...PRIST --- I drained my tanks, and flushed them , and added 100 LL....and have not had green sludge growing on the underside of my fuel caps, but still get some limited amount of green in the sump check along with condensation water. ...I did add Prist to my fuel tanks, but wish now that I had not only drained them, but maybe even steam cleaned them. May do that yet. I never experienced the problem in the 18 years I have owned the coupe, until this episode; and have used auto fuel Amoco Clear, since EAA approval STC. Now, until I am flying more hours, and refueling on a regular basis, I will continue to use 100 LL, as I think it is more Algae proof.... Not so sure about that, tho. I did not take samples to the lab and see algae cellular structure, but it sure looks like algae, and it grows in the tanks. I do have pictures of the green stuff, and maybe a dried sample... Harry Francis 93530 Blacksburg, VA --------------------------------- to unsubscribe send mailto:[EMAIL PROTECTED] ___________________________________________________________ T O P I C A The Email You Want. http://www.topica.com/t/16 Newsletters, Tips and Discussions on Your Favorite Topics
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