Why do you say "This is not the delayed upshift for..." The initial upshift on our vehicles is supposed to be delayed when the engine is cold to facilitate a quicker warm-up; it's engineered that way. Are you sure you're experiencing a problem here???

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Eric

1991 560SEL-Euro (214,000 miles)
1989 420SEL (Retired from daily use at 325,000 miles; Use as donor vehicle)