Changed the oil today in the truck. I last changed it on 10/29/09. I forget the exact mileage at that time, but it was just under 70k. I have 7485x miles on it as of today, so this oil had almost 6k miles on it. I used Kendall GT-1 Syn blend 5w30 last time. I topped off with a quart of Valvoline 5w30 conventional about 3k miles in and then a quart of Kendall GT-1 (w/ liquid titanium or whatever) 5w30 at around 4.5k miles into the OCI. It was about 3/4 of a quart low today before I changed it, so consumption is definitely something I'm gonna keep an eye on.
I noticed with the last bit of oil that came out of the pan today, that there were small bits of what appeared to be sludge. I've never noticed it before today, so I assume it got in there during this OCI. Looking in through the filler cap, it is definitely pretty dark where it was always a nice amber color before. I don't know if this is because of pushing the oil too far (I can't imagine 6k miles being too much for this oil) or what. It was in all through winter with the salt, a couple of snow storms where I was pulling people out of ditches and flat towed a Dodge 2500 about 15 miles through a foot of snow. But for the most part, it was normal driving.
I think I'm going to go about 4k on this oil change and see how it goes. I'm not going to bother with oil analysis. The cost is just way too much. I can do another oil change for the cost of the analysis.
I used Motorcraft Syn blend 5w20 today and a Motorcraft FL-820S filter.
I noticed with the last bit of oil that came out of the pan today, that there were small bits of what appeared to be sludge. I've never noticed it before today, so I assume it got in there during this OCI. Looking in through the filler cap, it is definitely pretty dark where it was always a nice amber color before. I don't know if this is because of pushing the oil too far (I can't imagine 6k miles being too much for this oil) or what. It was in all through winter with the salt, a couple of snow storms where I was pulling people out of ditches and flat towed a Dodge 2500 about 15 miles through a foot of snow. But for the most part, it was normal driving.
I think I'm going to go about 4k on this oil change and see how it goes. I'm not going to bother with oil analysis. The cost is just way too much. I can do another oil change for the cost of the analysis.
I used Motorcraft Syn blend 5w20 today and a Motorcraft FL-820S filter.