Teach Me...
Advanced
Joined: Nov 2003
Posts: 89
Likes: 0
From: Apollo PA
Re: Teach Me... (autotech)
The oil isnt the only thing that changes when a motor heats up. Your valves may be set just a shade loose and wen the motor warms up the expansion of the metals is just enough to make the little clatter go away. this is not a problem unless it gets out of hand. :chevy
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Re: Teach Me... (autotech)
The chemistry of oil is a complicated subject. That includes viscosity numbers. The multi weight oils don't have a constant viscosity. Nor are they less viscous when cold. They are supposed to have less a varience than straight weights over the tempeture range. Unless you have very tight bearing clearences, I would try a 10w-30 or even a 10w-40. That alone may qiuet your valve train. Good luck, and...
RACE ON!!!
RACE ON!!!
Safety Car
Joined: Sep 2003
Posts: 4,504
Likes: 0
From: Charleston SC
