[V6-12v] oil consumption and egr system and replacing instrumentbulbs

[James4ihl at aol.com]

Interesting topic to me, as I've just started precise measurements of how 
much oil my 92 80 is using to how many miles, as it seems to have increased since 
it's last service. Again, there are no obvious leaks or burning off of oil. 
Your e-mail particularly interested me because the only thing significant that 
was changed at the last service was the type of oil - we changed from Castrol 
Magnatec 10W-40, to Mobil One motorsport formula 15W-50. Now, me and my trusty 
mechanic did think about whether to change such an old car to a fully synth 
oil after all these years (it's always been on semi-synth), but he'd recently 
done some work on the chambers and sump and said it was basically remarkably 
clean 'like new', so we thought there shouldn't be a problem. Well, in theory 
there isn't as it still runs fine and there's no signs of 'mayonnaise'. But 
subjectively, it suddenly seems to be consuming much more oil. So I'm just 
wondering if there's a correlation between your Mobil One experience in a similar 
aged engine and mine... I think i'm gonna change back to Magnatec anyway at the 
next lubrication interval as i think on balance it's a better oil (I found out 
that Audi actually use it now as their standard service oil, and my own 
mechanic thinks it's superior too and provides better wear protection)... Anyone 
else had any oil consumption experiences of note?

James

In a message dated 27/12/03 5:16:14 pm, niederst at dashfast.com writes:


> My '92 100S has been consuming oil at the rate of 1 quart per 500 miles of
> late, which concerns me. When I bought the car back in '96, it had 53k on
> it, and used little or no oil between changes. It has slowly progressed to
> the current state over the past 7 years. I have been using either Mobil 1 or
> Castrol Syntec since ~60k, and always have used Mahle filters. My car does
> not leak oil or burn it (that I can see), so your EGR cleanout is something
> I'm going to try.
>