This topic is an old as the hill.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

I put filtered veggie oil right in the crank case.

Just kidding. Rotella 15w40. I buy in 5 gallon buckets.

One thing to remember. On a 4000 mile winter trip through Utah and Colorado and the midwest, oh boy did I wish I'd put in a winter oil. Living in LA that completely slipped my mind during trip prep.

What posessed you go and start a new oil thread, btw? Whoa there are a LOT of these smiley things.

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1984 300D Turbo 350K 50K WVO (two tank) "Maeby"

Wallyworld cheap universal oil right now. It has the right compression ignition ratings, it's 15w40, it's CHEAP. First run on this engine, had no clue if the motor was going to leak or burn gallons of oil for every fuel fill up, I went with cheap. Now that I know it doesn't, next oil change will be whatever serious 15w40 is least expensive. Rotella, Delo, Delvac, I'm not picky.

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617 swapped Toyota Pickup, 22-24 MPG, 50k miles on swap

All of my diesels get synth oil, except the generator which has rotella 15w40. The MB, F350, and Jetta get M1 5w40. The Passat just got LiquiMoly 5w30. Once it's out of warranty I'll switch to the DPF safe Mobil 5w40 product.

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

M1 0w40 as spec by M1. Seems to be good year round.

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-- Chris

'95 E300, 216k miles, Silver Surfer
'05 E320 CDI, 138k miles
'07 S550 4matic, 69k miles

Gone but not forgotten:

'76 300D, 350k miles?, SOLD in 1995
'75 240D, 300k miles, SOLD in 1991