Thu May 22 22:05:44 1997
- Message No. 888
From: "AVL, Gregor Baer"
Subject: Run in of engine / Oil
Some comments about thre running in of an engine.
The necessity of running in an engine depends on the engine.
One good indication if the engine has to be run in is the first oil
change. For example Volkswagen changes the oil the first time after 15000Km.
This shows that the engine doesn´t really need the great "run in phase",
because
in this case VW doesnt expect the oil to get dirty with particles that
would come into the oil
from metal grinding to metal. Nowadays the tolerances of manufacturing are
so low , that a lot of people say that it is no necessary to run in a
modern engine. Anyway there are still engines that have the first oil
change at 1000Km. This is an indication that the engine has to be run in.
It indicates as well that a special oil is used, that allows a little bit
of friction, but that has to be changed soon, because of the friction and
of particles.
Anyway, Iwould run the engine in, but not exessively. A good way to run an
engine in is not to go with too
high revolutions in the beginning, but changing the revolutions and gears a
lot. It doesn´t matter
(in my opinion) to go to high revs (after some hundred Kms and for short
moments in the beginning)
sometimes before 1000Km.
Some more comments about oil:
What I have heard about synthetic oil is that it doesnt oxidize and mineral
oil does.
That means that mineral oil gets older earlier, even without using it. The
conclusion from this is
if you dont use the bike often and dont do a lot of Kms and often go on
short trips it
is preferible to use synthetic oil. If you use the bike a lot and have to
change the oil every 4 or 6 month
you can use mineral oil. This is my personal opinion.
Greetings to everyone from Valencia
Gregor
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