Only if you're burning a massive amount of oil.

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CENSORED due to not family friendly words

Where can I find out about ZDDP levels in oil? I am currently using Mobil 1 0W-40 (European Fomula).

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1989 300CE

In an older 103 I wouldn't even mess with M1- engine and seals were not built with Synthetic properties in mine. M1 is overrated.

15-40 Rotella, and be happy. My M104 has 161K on it and ZERO burn on the stuff, even in PHX AZ summer temps.

rjp

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03 540I (GAK!!)
81 280E (W123)
70 LeMans Sport with pissed off Poncho 462"
1989 Silverado Step Side (under the knife- complete restomod)

I use the Ford powerstroke labeled oil in my m103. It's always on sale for cheap and it has all the diesel goodies in it. In fact it always seems to be on clearance.

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08 R320 CDI current

Past
95 E420
87 300D Turbo 5spd
90 300TE
83 300SD
85 300TD
92 400E
85 190D