[s-cars] New to 'S' cars

[b1biker at aol.com]

Recently acquired a 94 S4 which seems to run good but needs lots of TLC. I've owned a number of Audis; 1980 5000s, 1982 Coupe, 1983 Coupe GT, 1984 4000s, 1988 5000s Quattro, but this is my first experience with a turbo engined car. I live in central Colorado at about 8,000 ft. My driving is primarily mountain highways and interstates; short trips are at least 10 miles. What are your recommendations for oil during the summer months; I've always run 20w-50 but I'm not sure that this is the best for the turbo. I'm also having a problem with being able to see the instruments; particularly with the lights on atr dusk/dawn. Does anyone have any suggestions for a solution. Finally, are there any listers in the central Colorado area.
Thanks in advance for your help.
Gary Meier
94 S4
Buena Vista, Colorado