3000 OCI-Why still?

[ELS]

I tried to go to a 5,000 OCI in one vehicle for the first time.
But I had more incentive than just to try it.

I've went 4,000 or a bit over I should say.
Havoline 10w30... Napa/WIX filter.

I'm I guess a half quart low now and the oil is dark.
Changing it next chance I get... and trying synthetic.

 

[Doc8404]

Quote:

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I tried to go to a 5,000 OCI in one vehicle for the first time.
But I had more incentive than just to try it.

I've went 4,000 or a bit over I should say.
Havoline 10w30... Napa/WIX filter.

I'm I guess a half quart low now and the oil is dark.
Changing it next chance I get... and trying synthetic.

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1) so what if it's dark?
2) why go synthetic when your conventional will run 4-5k?
3) in that case, try Motorcraft blend and run 5k with no worries

 

[Saab9000]

Because thats the interval recommended by car manufaturers for "severe service" which probably applies to the vast majority of driving.