86 5ktq questions

[Jim Herzig <jimzig@athenet.net>]

i have a few questions to pose to the panel:

1.  On slippery roads the tail ends fishes back and forth making driving
very uncomfortable.  Alignment?  Tires?  I will try both if i must but any
suggestions.
I currently run Dunlop D60A2 tires.  As soon as i can find some cheap
wheels i will run Hakka's and hopefully eliminate this problem.

2.  When locking center diff it will remain intact for about 5 miles then
start to flutter in and out of engagement as i hit bumps.  The lights go on
and off and i can feel the change through the shift knob.  I know it
operates via vacuum.  maybe a leak?  Why would it work ok for 5 miles then
go out?

3.  Night driving is very difficult due to poor lighting.  I replaced both
headlight bulbs and aimed properly.  Should i use higher watt bulbs in city
lights or something to help?  Driving or fog light suggestions.

4.  Is it true that 5w30 oil is not best for turbo charged engines?  i
would like to use synthetic and 5w30 has the best temp ratings for the
winters here in Wisconsin but I thought 10w30 was to be used on turbos
which is only rated to 0 degrees F.

5.  I am in need of a shift rod, bushing and shift knuckle(connects to
tranny).  Dealer price is $125 any ideas where i can get cheaper?  Used an
option?

Thanks to all who respond!
Jim Herzig
86 5ktq 185K