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Oil additive question.

Well these cars are just prone to leak no matter what you stick in that oil pan. You add boost to an engine and those seals and gaskets start moving all over creating leaks. I found when I rebuilt the engine in my 87 GN that as soon as I started making boost again it started leaking right away. Quarter size drop in the garage. I drove the car 1200 miles with the waste-gate off so it wouldn't make boost on the break in and that was the most dry it ever was! Just stay away from synthetic oils. If you only drive it in the summer months put some 20-50 in there that sometimes is just thick enough to keep the leaks away. It will give you a little better oil pressure as well. I like to use 15-40 Rotella T with a bottle of the red stp. Keeps it a little thicker and my TTA don't leak at all. Maybe a dime size drop over the winter months is the most I'll see.
 
I use red line 5-30 with red stp. no major issues, just the normal boost related leakage. leak will be something you need to get use to in these cars, all the buick turbos do. just keep a drip pan under it:yes:
 
This really is a knowledge community on these turbos huh? That's awesome!

Now if someone can come here and get rid of my squeaky belt on the Goat (alternator) then there's a free lunch or dinner a Buffalo Wild Wings in it for them! lol (Change belts all the time ... use the best Gatorbacks, etc) I'm thinking a bearing in the alternator pully or maybe the bearing in the water pump pulley on the bottom? It looks lined up perfectly but when you rev the 455 to 2700-2800 RPM's it does look like the water pump pulley wobbles SLIGHTLY ... which I would expect from such a high torque motor.
 
You know,
It's possible that the inside of the pullys have glazed.
You might want to rough them up with some sandpaper to see.
That can cause sqeaking.

Just a thought,

:beach:
 
It's possible.
As the belt turns faster, and gets hotter, the "glaze" would no longer hold the belt, so it (the belt) would squeal.
I had that happen on my '70 Trans Am a few times.
Looking the the inside of the pully, where the belt sits, sometimes looks like a clear coat, that's the "glaze".
Not saying it is the reason, but that it could be.

:beach:
 
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