klr05stang

Hey guys, bought my 05 gt about a month ago. When I got it home I changed the oil to mobile 1 5-20 syn. I've only put 500 miles on it and there is already some wear to the oil, however so far it has not used any. To my understanding this stuff is supposed to be good for 5000+ miles. Most of my miles are hwy, the car has about 50k on it. And no I have not been driving the hell out of it. Here are a couple pics of the dipstick. Let me know what you think.

Goldenpony

Not really sure what you mean by "some wear on it". The oil in your picture looks good. When oil starts looking darker, it simply means the detergents in it are doing their job keeping the dirt in suspension instead of depositing somewhere in the engine. Any good synthetic oil should be good even past 5K miles. You're fine.

Nuke

Even black oil may still retain more than sufficient, useful amounts of the various "packages" that are added to a base oil. Color is NOT representative of an oils' condition. On some cars, oil will begin to darken very early. I've been running ful syn for years in a multitude of vehicles. I change it at 8,000-10,000 miles along with a quality filter, even on my tow vehicles, and I've had all of those that I hadn't sold before 200,000 go beyond 200,000 miles and still ran great with no compression issues or oil loss. Often the oil was dark to black by 1,000 - 2,000 miles.

I've been involved in oil analysis and you'd be suprised at the # of black oil samples that pass with flying colors.

klr05stang

thanks guys, I'm just paranoid. I just love my car so much!