As title says which is more important for pistons. I was researching what I could find on Havoline ProDs and only thing they tought is how clean it keeps engine for 150k and best for longer drain than competitors. I did like that they showed the piston had noticable wear and carbon at 150k with saying normal. BLAH BLAH BLAH Pennzoil went further to even criticize gm and FCA spec saying they keep pistons 40% cleaner than their specs. All oil companies have a claim and gas companies do same with new top tier specs coming out. So other than change oil more frequently or fillup with a better octane any how 89 what else is there that would help. My cars have always been higher mileage and with amount of short trips I only get around 50k and 9 years out of a vehicle over last 3 vehicles. I sell these cause costwise is to expensive with everyone having carbon buildup. Only solution is drive more trips but that is not always possible.
I am hoping to get more out of Grand Caravan since I got it with low mileage but no guarantee. What are your opinion. I ran Midgrade and Pennzoil synthetic on last one but GM electronics got it as well as oil leaks. I plan same here with Synthetic oil and Midgrade gas. Seems like the more refined fuel will help keep things cleaner.
I am hoping to get more out of Grand Caravan since I got it with low mileage but no guarantee. What are your opinion. I ran Midgrade and Pennzoil synthetic on last one but GM electronics got it as well as oil leaks. I plan same here with Synthetic oil and Midgrade gas. Seems like the more refined fuel will help keep things cleaner.