I am still trying to find my missing mpg on my 1980 240D.

I measured chain stretch using the cam tower hash mark method and the indicator was at about 8*.

Should I correct this much stretch with a woodruff key or buy a new timing chain?

I will take pictures and post them over the weekend. I am going to do the dial gage indicator method to compare the 2 results.

In the meantime, I am interested in thoughts on this......

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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