The most important thing is to use good gas (Top Tier if you are in the states), and change your oil. Other than that, I use all high quality synthetic products from AMSOIL in my ride.

I personally use one bottle of their fuel treatment (P.i) in the spring and I use their oil flush before each oil change. Other than that I just keep to the maintenance schedules for when to flush/change fluids and filters etc...

Also if you are going to store your vehicle for any period of time never forget to use gasoline stabilizer.



Edit: Top Tier is a trademarked standard of gasoline which meets a certain specification or requirement for additives. You can read/see the retailers on their site.

What kind of gasoline additives will help maintain the engine efficiency/life?
I'm a PhD student in my third year (4-6 is common in my country) and seriously consider abandoning my current topic. 
The new topic is in the same general field (CS related), yet in a vastly different domain and would need a quite different methods. My advisor suggested this switch, he could keep me funded in both cases, yet probably better with the new topic.

Arguments for switching are both personal interest in the new topic (it's recently trending, I was interested from the beginning, yet few positions were available) and lack of progress in the current area:


I could produce some publications, yet not up to my advisors expectations (should be easier with the new topic, given the impact factors of the journals my advisor suggested)
For the last 6-8 month I made barely any progress (lots of failed experiments)
I would probably have to abandon my current methods anyway due to 1./2., so half a year or so will be lost learning new methods no matter how I decide


Yet I shy away from switching, mainly due to already being quite old (combination of personal problems and a switch of my major as an undergraduate) and fearing how my C.V. would look if I did take about a year longer and had this second switch...

Thanks for any input.
