Originally posted by norm985e1:
Would love some feedback on this one. I have heared good and bad. I have gone over 30K and think it would be a good time. Some of the questions I have are:
1) How many of the cars that were exsperenceing oil starvation used synthic oil. (that auto-cross thing)
2)What kind should I use
3)Does the change in molecular structure have any advers effect on the cylnder walls (I'm streching), the viscosity is different. 4)can you ever go back to regular oil
5)Is anyone crazy enough to go 6k with out a change
Thankyou for dealing with my inexsperence 
1. synthetic oil is not a miracle worker, if you have oil starvation with conventional oil you will still have it with synthetic
2. MOBIL 1, CASTROL SYNTEC, AMS OIL are the only ones I trust
3. yes, and that is why you should wait at least 6000 miles before using synthetic, if you have 30,000 miles you don't have to worry about this.
4. yes, you can fill your engine with half synthetic and half non-synthetic, or whatever you want.
5. AMS OIL advertises 25,000 miles before and oil change. My last viehicle 95 F-150 with inline 6 engine, I went 30,000 miles without a change, and had an oil sample burned every 12k, and the results after each sample: "change your filter, top off the oil and go another 12,000 miles" Only reason I drained the oil was because I was selling and the buyer commented on dark oil.
