Jeep Strokers

I was checking my oil yesterday,and the oil on the dipstick was thick, like syrup . I've never seen that before. I'm running castrol syntec 10w30 with a k&n filter that only have about 1,000 miles on them. what would cause that to happen? It's been really hot out here lately, from 100-109 hi's the past week,but usually it gets thin when hot. Any help/insite would be appreciated.

anyone?

It is my understanding that when motor oil ages it shears to a higher viscosity than when new.
If you overheat the engine it's more pronounced.

something about anti-shear and anti-wear additives being consumed and TBN changes.

http://www.machinerylubrication.com/Rea ... ity-grades

YMMV
go here http://www.bobistheoilguy.com/ if you want to read far more than you really wanted to know about oil.