When to go synthetic?
Registered User
Joined: Dec 2003
Posts: 37
From: WESTFORD MA.
Car Info: 2002 WRX SILVER WAGON
changing to synthetic
My rule of thumb, is to put on 2500 miles with the OEM lube, change oil & filter,
using dino oil, then change to synthetic @ 5k miles. I drive hard during break in, but make a point of fluctuating engine speed. That helps lap in the rings etc.
I have put over 125k miles on cars, including 30+k miles on my 02 WRX, and never use a drop of oil between 5k mi. changes. I use Castrol Syntec 5-30 most of the time, and Mobil when I can't find it.
By the way, Purilator makes the Suby oem filter.
using dino oil, then change to synthetic @ 5k miles. I drive hard during break in, but make a point of fluctuating engine speed. That helps lap in the rings etc.
I have put over 125k miles on cars, including 30+k miles on my 02 WRX, and never use a drop of oil between 5k mi. changes. I use Castrol Syntec 5-30 most of the time, and Mobil when I can't find it.
By the way, Purilator makes the Suby oem filter.
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