Originally Posted By: RiceCake
I'll just put it this way, I've heard in my years on this earth, plenty of people telling me the way things "are supposed to be done" or "how they're always done".
Almost unanimously, its never what the manual suggests, the manual written by the people who engineered the car. Or its not what the manufacturer of the shingles recommend for installing it on a roof. Or its not the procedure recommended by the paint company for applying the paint. Etc, etc, etc...
There are certain cases where there is a better way, and I respect good mechanics for knowing a thing or two about it. Some simple stuff I can understand anyone can "figure out" and some techs have plenty of cars down pat and won't blink an eye doing a job without checking a manual.
The main problem is people who can't do the most fundamentally helpful thing anyone can do. Admitting they don't know, and admitting they want to get advice and double check. The manual is advice to live by and anyone who can respect it, awesome.
Problem is checking a manual for a lot of people is admitting you don't know, and doing so is emasculating and shows you somehow must be an idiot who will screw up...
Plenty of people will wing things over personal pride; that being said I study and reference manuals...all manuals I come by...religiously.
Edit: Try asking a mechanic if 0W-30 will destroy your car. Plenty will say its too thin or it doesn't exist before saying they don't know.
+1,000,000