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Old 12-01-2011, 02:18 PM   #552
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Join Date: Nov 2011
Fan#: 91700
Location: Morgan Hill, CA
What I Drive: 2012 white platinum Forcus SEL 303A

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When my wife was in town yesterday, I had her put mid-grade fuel in our SEL just to see if the higher octane might improve the acceleration from stop condition (shudder). She reported that she experienced the shudder for a time after she refueled. Today I took the car to a meeting and put about 30 miles on it, with several stop and go opportunities and I can report that it did not shudder once when pulling away in "D". I'm not excited about putting more expensive fuel in the car, but I will do so to get smooth performance. It make sense because the TCU is programed to up-shift ASAP to improve fuel economy and the shudder might be due to the engine actually lugging, as it would if you were driving a fully manual transmission car and you shifted from first to third at 15 mph. I'm still hopeful!
2012 Focus SEL 303A, moon roof, etc
2012 Yamaha TW200 Dual Sport
1975 Jeep CJ -built
1974 Dodge W300 Power Wagon dump truck
2002 Kubota B-21 tractor-loader-backhoe
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