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| How fast does gas get old? https://mail.slantsix.org/forum/viewtopic.php?t=3821 |
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| Author: | Daniel J. Stern [ Tue Jun 25, 2002 11:19 am ] |
| Post subject: | How fast does gas get old? |
Gas (unknown octane, plus STA-BIL) in tank of Lancer is almost a year old. Car's seen 100+ degree heat and 0 degree cold, and the '62 fuel system is not sealed. Tank was full, and doesn't smell varnishy. Been *PING CITY* this past week driving the car around, under moderate loads and moderate throttle opening. I retarded the base timing from 10BTDC to 2.5 BTDC, still ping city. Added 2 gallons of 114 octane race fuel to about a half tank of the old fuel...3/4 mile later, the pinging stopped. Think it's just octane loss in the old fuel, or an over-advance situation? I do have the MP distributor, which comes with a long/fast advance curve I haven't changed, but I had this before, too, and I don't remember this pinging. DS redbear@vrx.net |
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| Author: | Gary [ Tue Jun 25, 2002 7:31 pm ] |
| Post subject: | Re: How fast does gas get old? |
Dan, I recently started my '73, 318 truck that hasn't been on the road for two years. It has also seen 100 plus heat and cold in the teens. I added STA-Bil when I parked it so it started and ran just fine. I didn't take it on the road, so don't know if it pinged or if there was a power loss. At least it didn't stink as is usually the case with stale gas and throttle response was brisk. One thought...if the fuel in the car was a winter gasahol mix, maybe the alcohol isn't protected by STA-BIL. That might explain the pinging since the alcohol acts as an octane booster. lancer_41@excite.com |
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