I have been driving troublesome used cars for years and while it has forced me to learn to be a pretty experience shade tree mechanic, it is time consuming and stressful to deal with while I'm in college. Lately, I've been looking to somehow get a much newer car and I stopped by a used lot to look at a 2010 Malibu with the 3.6 V6 that had about 50k miles on it. I popped the hood and started exploring and when I removed the oil cap, I noticed a VERY orange film covering the inside of the cap. When I wiped my finger on it, it made my finger look like it had red clay mud on it. I've had to replace 3 lower intake manifold gaskets with the upgraded aluminum gasket on Series II L36's and L67 3800 V6's in the past and that had me wondering if the orange film I saw in the Malibu's 3.6 could have been DexCool in the oil due to an intake manifold leak. That made me curious as to whether or not anyone has been having issues with this orange film in the oil cap and whether or not anyone has figured out what it is. Do the 3.6's have the same lower intake manifold gasket problem that they 3800's had? I just want to make sure I know what I'm getting into if I buy a car with the 3.6.