Hey Guys... I've searched the oil threads to death and had settled on Castrol GTX Drive Hard for my first oil change ('08 w/less than 3K miles on it). Wanted a dino oil to continue break in etc. When I got to Kragen to purchase there were two varieties?? The 10w-30w GTX was labeled "Superior Sludge Protection", while the 5-40 was the "Drive Hard" that I have seen the performance data on. I want the spec'd 10w-30w.

At first I thought it was simply a different slogan with identical oil, but the 10w-30w Sludge Protection is energy conserving and the Drive Hard 5w-40w is not. I suspect they only make one 10w-30w GTX oil as they only show the Sludge Protection on the Castol site now but thought I'd ping the group.

Can anyone confirm this was maybe just a running slogan change? No issue with "Energy Conserving" oil during break-in?

BTW: Let's all play nice... I really did try to do my homework before posting so as to not get the "Oh God, another oil post!". Thanks in advance for your help.

 

Stick with the 10w30 and you'll be fine, it's just a campaign add to spark your memory of the commercials their running to the oil.