right on, that's the validation I was looking for.
Though I must say she still runs great, even cold, but especially once she gets to operating temp.
I don't find her slow or sluggish at all.

Should I check the timing chain stretch and IP timing anyway?

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Current Mercedes
1979 maple yellow 240D 4-speed

Gone and fondly remembered:
1980 orient red 240D 4-speed

Gone and NOT fondly remembered:
1982 Chna Blue 300TD

Other car in the stable:
2013 VW Jetta Sportwagen TDI / 6-speed MT