Take the poll...what brand of synthetic oil do you use?

What brand of synthetic?

Thanks!

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Glen Tokuhara
Beauty & the Beast and the wagon that could!

Glen,

I use Mobil1 engine oil, and Redline for my transmission and Differential. The question is which one are you referring to?

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Bernie
1986 190E 2.3-16

Bernie,
Ah, I should have made myself more clear. I'm curious about engine oil, what brand of synthetic motor oil is most commonly used?

Thanks for the feedback.

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Glen Tokuhara
Beauty & the Beast and the wagon that could!

Ditto to Bernie...

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Jim

1992 500E
2007 CLK63
2003 Audi RS6
2001 Audi allroad

Hey Guys...what do you think about changing to synthetic oil for my 300E w/148K miles...on my last oil change, I went to 20W-50 castrol (from 10W-40) and as expected I've noticed a loss in mpg...I've heard in the past (correct or not?) that by changing to synthetic in older engines, seals and/or gaskets that are accustomed to the fossil stuff could be adversely affected...engine is very tight, no leaks, excellent compression, etc. ...experience preferred, opinions accepted...as always, thanks, Bill

Bill,

I started using Castrol Syntec 5W50 in a 1979 300SD I bought with 160,000 miles. I don't know what oil was used previously.

Oil use decreased from 3 quarts in 10,000 miles to 1 quart in 10,000 miles after 30,000 miles of use. There were originally a few small oil leaks but they disappeared.

So I would recommend Castrol Syntec for your car as it has worked for me.


P E H

untrue. the only "adverse effect" would be that the synthetic, being thinner in nature, may expose existing leaks that were previously unnoticed.

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'94 W124.036 249/040 leder; 8.25x17 EvoIIs
'93 W124.036 199/040 leder; 8.25x17 EvoIIs, up in flames...LITERALLY!
'93 W124.036 481/040 leder; euro delivery; 8.25x17 EvoIIs
'88 R107.048 441/409 leder; Euro lights
'87 W201.034 199/040 leder; Euro lights; EvoII brakes; 8x16 EvoIs - soon: 500E rear brakes
'70 R113.044 050/526; factory alloys; Euro lights

Thanks for the input...now that we've established that I'm not going to hurt my engine, another question...I will go w/either Castrol or Mobil1 - opinions? My question is regarding which weight oil should I go with? I live on the NC coast in a pretty moderate climate (coldest temps here may dip into the mid to high teens only on very rare occasions) Whaddya think?...again, thanks...Bill