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Originally posted by Larry B.:
What does your fuel consumption look like? If you have a bad injector you could be pumping in extra gas. The oil washes the byproduct that didn't go out the exhaust into the crank but it turns oil dark quickly. Could be why the "Check Engine" is on.

I changed my oil about 1000 miles ago and today when I checked it, it was up where it should be but seemed a little dark. I use Penzoil 10W30 plus 1 can of JB Oil Treatment to attempt to combat age and oil use. It is an 88 Sport (302 V8) w/90,000 miles. Any ideas as to why the oil seems dark? I know it gets darker but after only 1000 miles?

Also, now that the warm spell is over + sub freezing temps are with us again, my blinking Check Engine Light has returned during accelerations (even mild ones). Any thoughts on that?

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quote:

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Originally posted by Vince:

What does your fuel consumption look like? If you have a bad injector you could be pumping in extra gas. The oil washes the byproduct that didn't go out the exhaust into the crank but it turns oil dark quickly. Could be why the "Check Engine" is on.

quote:

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Originally posted by Larry B.:

I changed my oil about 1000 miles ago and today when I checked it, it was up where it should be but seemed a little dark. I use Penzoil 10W30 plus 1 can of JB Oil Treatment to attempt to combat age and oil use. It is an 88 Sport (302 V8) w/90,000 miles. Any ideas as to why the oil seems dark? I know it gets darker but after only 1000 miles?

Also, now that the warm spell is over + sub freezing temps are with us again, my blinking Check Engine Light has returned during accelerations (even mild ones). Any thoughts on that?

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