What's the correct viscosity for synthetic oil in a GLX

[Thomas Muller <TMuller@avita.com>]

I've been following every oil thread in the list for the past few months
and 
have a few questions of my own ....
I own a Black GLX VR6 (all stock accept for the tinted lights and
headlight covers, which do make the car go faster !) and up here
in Canada you can expect the engine temperatures to run 
205 - 240.   I've had one oil change already and had the dealer
put in the synthetic oil ... I've noticed a slight decrease in engine
temps, about 5 degrees.  I believe they used castrol 15w50 ... but
I'm wondering what would is the best synthetic oil viscosity for the 
winter, can you run a 10w/30 synthetic oil in the winter, how long
should you (or can you) wait between oil changes .....

Thanks ....

Thomas Muller
Oakville, Ont - Canada
98' Black GLX VR6
No Mods
> -----Original Message-----
> From:	Billy T. [SMTP:btylaska@onramp.net]
> Sent:	Wednesday, October 14, 1998 11:53 AM
> To:	jettaglx@igtc.com
> Subject:	Re: Best Oil?
> 
> Here is what I know about synthetic oil and the VR6.
> 
> VR6 is designed to run in the 210-240 degree range.
> Synthetic oil is designed to run cooler, and except under extreme
> conditions, rarely reaches 240 degrees.
> 
> I have never had a VW tech reccomend synthetic oil.
> 
> I run petroleum based 20w50, Valvoline
> 
> The dealer put Valvoline 15w40 durablend in my car, it is a
> synthetic/petroleum blend.
> 
> Billy T.