[R129 SL] R129LIST Digest, Vol 72, Issue 4

[j.kuylaars at kpnplanet.nl]

One thing is clear: your egine should not become above 85 degrees fahrenheit. -I changed radiator and the visko clutch fan and now it dous' nt come higher on a hot day . Do you have enough power? If your visco is ok look at the temperature meter and look how long it takes to come to 90 degrees. If the value is reached within a few minutes looks at you muffler. There is a good change the catalysator is burned and melted so the exhaust cannot loose the burned gasses and the engine becomes to hot. I had it like a chainreaction so the bobines and sparkcables and radiator becomes to hot and burst at the end and the visco failed while it must work to hard and to much.  Jan 
Verzonden vanaf mijn draadloze BlackBerry®-toestel

-----Original Message-----
From: Matthias Fouquet-Lapar <fouquetlapar at free.fr>
Sender: r129list-bounces at mbcoupes.com
Date: Sun, 17 Jul 2011 18:54:24 
To: r129list at mbcoupes.com<r129list at mbcoupes.com>
Reply-To: SL Mailing List <r129list at mbcoupes.com>
Cc: r129list at mbcoupes.com<r129list at mbcoupes.com>
Subject: Re: [R129 SL] R129LIST Digest, Vol 72, Issue 4

I don't believe a W30 oil is not correct for high outside temperatures, you are risking major engine damage

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On 17 juil. 2011, at 18:15, r129list-request at mbcoupes.com wrote:


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>   1. Oil pressure question (Oldbenz1 at aol.com)

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> Message: 1

> Date: Sun, 17 Jul 2011 10:09:34 EDT

> From: Oldbenz1 at aol.com

> Subject: [R129 SL] Oil pressure question

> To: r129list at mbcoupes.com

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> My ;92 500SL exhibits a strange thing.  When the outside temperature  is 

> very high and engine coolant temp approaches 100C., the oil pressure drops to  

> very nearly zero at idle.  When engine RPM's are increased, the pressure  

> immediately increases to an acceptable level (between 2-3 atm).  The car  has 

> less than 61,000 miles, has always been properly maintained, and  I change 

> oil at 3000 mile intervals.  I use Valvoline 10W-30W  and change oil and 

> filter at 3000 mile intervals.   I find it  hard to believe this is normal-  

> does anyone have ideas what's going  on?  

> Rich Splaine   

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