Just thought I'd update.

I changed a bit early back to the Mobil 1 5W-40 (magically restocked at dreaded Walmart for $22/Gal.) Engine sounds MUCH SMOOTHER than it did with the single weight oil from the minute I started it up. It's quieter on the highway too with the engine running just under 100c. I'm guessing the 40W is better with the higher temps.

My filter was very clean when I replaced it, but the oil itself looked worse than the last M1 I had in for 6K plus!

I will not make the mistake of buying SAE 30 or any single weight oil again. Technology is a good thing, even for old cars.

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85 300D 180k

I should also mention that I checked the oil at the store to make sure the seals were intact, then I went and grabbed some deoderant because it was also cheap there. Turns out my oil was fine, but the two deoderants were both open and the dispenser busted. God I hate that store!

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85 300D 180k

Why spend more on rotella its like 11 bucks, i use mobil 1 delvac 15-40 its 9 buck per gal at wal mart

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Current Garage
2008 Mercedes GL320 CDI 188k mi Repair/Work in progress
1994 S350 160k mi Garage Queen & prepping for repairs
2005 E320 CDI 203k mi Healthy & Daily Driver
1994 S350 357k mi Retried as parts car
1984 300TD 214k mi Blown OM617 Poss OM603 Swap??

Sold
1987 300SDL 200K+
1994 S320 181K mi
2008 E320 Bluetec 127k mi
1999 S420 130K mi
1980 240D 360k mi
15+ Others that has come, stay and gone

GONE, BUT NOT FORGOTTEN
1995 E320 SE 220k mi
1984 300SD 350k mi