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Old 04-08-2000, 02:25 AM
need2speed's Avatar
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Join Date: Dec 1999
Location: Edmonton, Alberta, Canada
Posts: 1,253
Say...I got this great buy on synthetic 5W-50 motor oil. I had assumed it was a truly all weather oil but I'd like to know the temperature range. Can anyone tell me?

I'm planning a trip down to Las Vegas and would like the best protection possible (for my car that is).

Dean Albrecht
94 E500
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  #2  
Old 04-08-2000, 02:34 AM
Nick Jamal
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Let me guess... Castrol from Price Club/Costco?
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Old 04-08-2000, 02:38 AM
need2speed's Avatar
speedaholic
 
Join Date: Dec 1999
Location: Edmonton, Alberta, Canada
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Okay, so I did an archive search on the subject...and am no wiser still. Seems there is a controvesy about running oil with that wide of a temperature range (whatever that is). To throw the proverbial monkey wrench...I'll be doing a little racing down in Vegas so now I'm worried that I have the wrong oil viscosity. You racers out there: what should I use????

Dean Albrecht
94 E500
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  #4  
Old 04-08-2000, 09:05 AM
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Join Date: Jun 1999
Location: Barrington Hills, IL USA
Posts: 136
Based on research and comparison between the various synthetic oils' test results on ASTM standardized tests I picked RedLine. I run 10-40W. Everything is a compromise. Pick your oil based on those test categories that are important to you. I felt redline the best compromise.
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Old 04-08-2000, 03:27 PM
mattsuzie
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I am an advocate of synthitic oil. I have never heard of anything bad about the wide ranges. I would feel more comfortable if you were talking about Mobil 1, however.

Synthetic is just better oil molecules that take longer to break down. Even the heavier weight, 5W-50, is not that "heavy" as compared to regular 10W-40. In Vegas, temperatures in excess of 100F, you absolutely want something that is more prudent in warmer climates.

My manual recommends 20W-50 for those high temperatures. I'd recommend Mobil 1. Don't look for cheap deal when buying oil for your Benz. Cheap deals usually compromises longevity.

Just my 2 cents.


------------------
'89 420 SEL
'90 300 SEL
'84 300 SD (sold it)
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  #6  
Old 04-09-2000, 03:55 AM
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Join Date: Jun 1999
Location: Surrey, Beautiful British Columbia, Canada
Posts: 750
had a really bad experience with castrol 5W50 oil leak made worse. stayed away from synthetic oil since.
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