[urq] ZDDP in oil

[Ed Kellock]

I know nothing of ZDDP, but I've been using Rotella also, synthetic in
winter, non-synth in summer.  This includes my V8's as well as the 91 Avant.
It stemmed from many years ago when my Dad would use the diesel rated 15W40
instead of 10W40 in our gas-engined Mercedes because we lived in the desert.



> -----Original Message-----
> From: urq-bounces at audifans.com 
> [mailto:urq-bounces at audifans.com] On Behalf Of Brandon Rogers
> Sent: Wednesday, October 22, 2008 1:54 PM
> To: urq at audifans.com
> Subject: [urq] ZDDP in oil
> 
> 
> So the latest issue of Hemmings Sports & Exotic has a little 
> blurb about a product - a ZDDP additive.  Apparently it's a 
> chemical taken out of a lot of newer motor oils that older 
> engines like - they particularly mentioned flat tappet (as 
> opposed to rollers) lifters - which is what we have - right? 
> They said most of the "high mileage" motor oils have ZDDP and 
> that some diesel motor oils have it.
>  
> I have been using Rotella T Synth for a few years based on 
> info from another lister - my understanding is that Rotella 
> was/is formulated for heavy diesel use - or something like 
> that.  All I really got was that it was supposed to be good.  
> But that said I also use Mobil 1 too.  Whatever. 
>  
> Anyway - anybody want to weigh in?
>  
> Brandon
> '84 ur
>  
>  
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