Yellow goop

I'm a new owner of a Taco, first vehicle that is not a beater, I found some yellow goop under the oil cap. I have read some of the other threads regarding the subject and am still a bit concern. I do take a lot of short trips and it's quite cold here. Any advice?

 

Change the oil more often. Like every 3k. And try to let your truck warm up for as long as possible.

 

You're not letting your engine get to normal operating temperature so it can burn off the moisture in the oil. Oil will tend to collect moisture over time, which isn't good. Warming up the engine before you drive won't do anything for that IMO, except waste gas. You need to drive your truck for at least 1/2 hour every few days for it to evaporate the moisture from the oil.