Sorry, but do you get the point??????? Actually, was on an old slow work computer and guess I got click happy. Most boards will not do this or my other computers won't let me. Jim N.
I have also used Mobile 1 for 15 years now on the same motor with over 500+ runs down the 1/4 mile. The engine looks the same as when it was new, very clean. I also use it in my Ford Ranger 6 cyl. It now has 130,000 mi and is quiet as when new and doesn't leak a drop. I am now using the Mobile 1 extended service (15,000 mi. oil) oil in my Toyota Corolla XRS and I am running it for 15,000 miles with this. I just change the filter at each 5000 mile interval when the maintenance light comes on, then change the oil after 15,000 mi. I have 95,000 miles on this motor. This engine spins to 8 grand so I like the idea of running the synthetic in it.
Every car I've owned I switched to the high mileage synthetic once it hits 80k miles. Going from dino oil to synthetic on an old engine will leave you chasing small leaks as the synthetic tends to seep more, but the high mileage stuff actually does help keep the oil from seeping as much. I don't race so it's all street driving at moderate rpms, and I change the oil and filter every 4,000 miles or 6 months (which ever comes first)