I'm with Cooker, unless Premium Blue is motor oil / dark amber colored, I assumed whatever they had laying around that month was dumped in. I would think premium blue whould be sorta blue . . maybe not?
Also agree with HC on the interval / schedule. Unless you're extreme duty 5k intervals are a good middle ground. Also agree that wait until the 12-15k range until swapping to the custom oils. Dumping a friction inhibiter in too soon will impeed proper engine break-in.
Do what's important to you . . oil IS cheep but remember the environment. 7500 miles is what most engine mfg's call for in an extended drain oil.
my . 02 cents
Michael
[This message has been edited by madams (edited 01-15-2001). ]
Also agree with HC on the interval / schedule. Unless you're extreme duty 5k intervals are a good middle ground. Also agree that wait until the 12-15k range until swapping to the custom oils. Dumping a friction inhibiter in too soon will impeed proper engine break-in.
Do what's important to you . . oil IS cheep but remember the environment. 7500 miles is what most engine mfg's call for in an extended drain oil.
my . 02 cents
Michael
[This message has been edited by madams (edited 01-15-2001). ]