Re: AoA on 10W-30 vs. 10W-40

[Andrew Duane USG/PE <duane@zk3.dec.com>]

Hairy green toads from Mars made Doran Howitt say:

> According to a chart in my '89 100q owners manual (p.98), the climate 
> temperature range is the SAME for 10W-30 and 10W-40 engine oil, 
> shown as approx. -5F/-20C up to only 60F/15C.  Questions:  
> 
> 1. Are these numbers right?
> 2. Why doesn't the range for 10W-40 go HIGHER than for 10W-30?
> 3. If these nubers aren't right, why does Audi publish wrong info?

Well, just to add to the confusion, Audi recently decided to
recommend 20W-50 for year-round use. I use it in both of my cars
('89 100Q and '90 90Q20V) and it's fine.

-- 

Andrew L. Duane (JOT-7)			duane@zk3.dec.com
Digital Equipment Corporation		(603)-881-1294
110 Spit Brook Road			http://www.zk3.dec.com/~duane
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Only my cat shares my opinions, and she's too heavy to care.