[Richard]

As previously stated, a small amount of coolant in the oil causes major heartache. In other words, before you drive it again, make sure there is NO coolant in the oil.

In my opinion, looking for coolant on the dipstick is not reliable until the crankcase has a lot of coolant in it.

Drain a quart or so of oil into a clear jar. Let it sit overnight. Tilt the jar and look through the bottom corner of the jar towards the light. If there is coolant in the oil, it will show up in the low point of the jar.

I hope you don't have coolant in the oil, but it's important to find out if you do in order to prevent significant damage.

Of course, as previously stated, the oil test is the most reliable method, and worth the money for the peace of mind.