OK ... I know this has been discussed as nauseum and beyond, so I'm not trying to start a new arguement about the best oil ... but I am having trouble on the search feature because of the abundance of threads that match the search criteria. I.e., it turns up a million results about random topics in which oil happens to be mentioned. Can someone link me to a previous discussion about the possible merits of switching to sythetic? It's something I'm considering and I want to read up on it. I know there's been some LOOoooOOng threads regarding it ... can someone direct me to a good one?

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1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles
1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles
1995 S320, black/parchment--34,000 miles (Dad's car)

You just started an oil thread!!!!! Burn the witch burn the witch!!!!!.. jk jk jk


Im converting to synthetic soon as I get the $$...


This is one topic your going to want to read up on. Search like you did and read the longest thread on the subject, then the next longest. You'll get the idea on what to do.

Sorry to add to this one, but the answer is pretty simple. Leaks from changing to synthetic oil are largely a thing of the past. They still clean out the inside of your engine very well and resist sludge formation. You can drive further on them if desired, but it's still more expensive than running non-synthetic oil.

I've opened up gasser engines which were fed a steady diet of Mobil 1 and they were not just cleaner inside; they were spotless. Non-synthetic oil always leaves a brown film everywhere.

From what I can see, the only downside is the price. I think it's worth the difference, considering how much more you spend for fuel to move your car through the change interval.

I'm switching my 87 to it as soon as I get some time. I'll be replacing the oil pressure sending unit and oil level sending unit at the same time.

Got the Mobil Delvac 1 5W-40 in the garage.

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-justin

1987 300TD, 1987 300TD
2008 R32, 2000 Passat Wagon

There is always the option of cheaper synthetics, although they wont be as high in the group of synthetics they will still do much better then dino's.

For example rotella 5w40 "synthetic" is about $14 per jug at walmart for the same price i can get Chevron Delo 400! so what would be the better option? even if it isnt a mobil 1 synthetic its still a synthetic!

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Current:
05 E320 CDI
07 GL320 CDI
08 Sprinter
05 Dodge Cummins
01 Dodge Cummins

Previous
2004 E55 AMG
2002 C32 AMG (#2)
1995 E300
1978 300D
1987 300D
2002 C32 AMG(blown motor :[
1981 300SD
1983 300SD
1987 300SDL
2002 Jetta TDI
1996 S420
1995 S500
1993 190E 2.6
1992 190E 2.3
1985 190E 2.3 5-Speed

I just searched with the word synthetic and found 17 pages of related info. good luck...
too bad you can't organize the search...
John

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

That's perfectly good oil, I use it when I get too lazy to plan ahead and order M1 because I can always find it at walmart.

Of all the discussions around various boards about synthetic vs dino, it can seem to go either way. I have actually had a personal discussion about this with two different people in two different places. One was an oil company rep at a large auto show, and the other was a chemical engineer on an oil platform in the Gulf of Mexico. Both of them did everything they could to convince me on sticking with dino oil (to my surprise!!)

I just use regular 'ol dino oil and change it every 3K miles. If I lived in an area where the temperature changes were more severe, I wouldn't think twice about synthetic.

I classify myself as "confused" on the issue.

I run Shell Rotella dino with STP Oil Additive - a synthetic additive.



Ken300D

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1982 300D at 351K miles
1984 300SD at 217K miles
1987 300D at 370K miles

Here's where you can ask also.

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1999 E300DT (131,800) 154,000 Black on Black SOLD

2006 CLK 500 coupe Capri Blue on Grey (zoom,zoom)
47,000mi

04 VW TDI Passat 80,000mi
(Techno)

How to eliminate oil dependency through market-driven approaches.
“We could cut oil use in half by 2025, and by 2040, oil use could be zero,”
The Sound of Diesel Speed
Ode to MB

Not too surprising since they both work in the dino oil industry.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

Here's a good thread discussing dino and synthetic oils.
http://mbca.cartama.net/showthread.php?t=17190&page=1&pp=15

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

www.bobistheoilguy.com will answer a lot of questions.
Bud

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1987 300D Turbo, 175k mi., 1998 BMW 323i Convertible, 1997 F250 4x4 7.3L PSD

My oil consumption/leakage has not changed from when I was running dino oil.

This is my experience as well. I do know of a few stores in the early Mobil 1 days of seals letting loose, but even then I can't be sure that crud wasn't holding the old oil in.

These days, if you get a leak after switching to synthetic oil, you were going to have one anyway sooner or later.