[Amc-list] Engine Break in - Synthetic Oil

[Brien Tourville <hh7x@xxxxxxxxxxx>]

they might be pre-broken-in.  it's possible today to make engines that
require little break-in time, and they might be running them on test
stands before installing them in cars; lincoln did this back in the
early '60s - 2h on -every- 430, incl. 30m at full throttle.  those
cars would regularly go 250000mi without touching the engihe.  even
more remarkable considering the inattention they likely got and the
oils of the day.

" Personally, I believe it makes some economic sense to use conventional
" for the first couple of changes, when you're changing it on really short
" intervals, but if you've money to burn, I see no reason you couldn't use
" synthetic from day one.

i've heard that synthetics are too slippery to allow proper break-in
wear.
________________________________________________________________________
Andrew Hay                                  the genius nature
internet rambler                            is to see what all have seen
adh@xxxxxxxxxxxxxxxxx                       and think what none thought



===.===


when I built the Race Engine for a BMW flat twin -
under tutelage from Udo Gietl - BMW Importer Butler & Smith -
head of Service & 'BMW RoadRace' 

[ Daytona, Bikes Winning 1974,5,6,7 ]

the drill is dry cylinder walls
with oil smeared on the piston skirts:

fire engine / maintain 2,500 RPM for one minute
which cuts the working surfaces of ring pak to 
cylinder walls.

the results were excellent - both cylinders
measured at the top of their compression range
and maintained for years being beaten regularly.

Synthetic Oil back then had just hit the market -
I stayed with Castrol GT for break in - as recommended.







-- 

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