oil doesn't burn because of its composition, it burns because it gets by the rings into the combustion chamber. seating is supposed to keep this from happening.

 

My Son bought a new Jeep, it has the inline 6. At the first oil change he went full synthetic. It burned 2.5 qts in 1000 miles. He changed back to regular dyno oil and it is slowly coming back. It now burns 1 qt in 3000 miles.

Once he has the rings seated, he can go back to full syn.

 

Synthetic lasts longer because it doesn't break down like normal oil. After 5000 miles it will still have enough viscosity to properly lubricate the engine.

 

Organic molecules use term DALTONS to describe their SIZE.
Natural and hydrogenated Base stock oil is composed of various sized molecules whereas 100% Synthetic base stock use just 1 sized molecule.

All use additives which are different sizes so 90% the same or 20% the same sized.

Why synthetics has a slightly lower friction coeffficient.

http://en.wikipedia.org/wiki/Atomic_mass_unit

 

I have been told by my service person that semi-synthetic should only be used on my Skyline 350GT Coupe because if fully synthetic oil is used, when you start the cold engine, there could be vibrations and it could be knocking or something. Have anyone heard of this problem for a G35 Coupe?

 

This topic has been heavily covered in the past. Real world experience...106K miles, went to synthetic at 12K...no oil burn or usage still today, change it every 5-6 K. You decide.

 

I just switched to fully synthetic today.

K_hojnacki, you need to slow down, I'm at 19K on the odometer!

 

One of two possibilities here; A. he's a total idiot, or B. he's trying to see how badly he can lead you astray! There is one other possibility of course, C. someone is playing a troll!


Steve
Hi-Tech Oil Co.
Distributing industry leading AMSOIL synthetic lubricants for 20 years

 

Hi Jeff. Any dealership that would utter such nonsense, , is one to avoid like the plague and run away from as fast as you possibly can! If they don't even know anything about oil, then they are assuredly also not qualified to work on your vehicle!

Steve
Hi-Tech Oil Co.
Distributing industry leading AMSOIL Synthetic Motor Oils for 20 years

 

LOL, I wish I could but the car is so dam fun to drive . Actually they are all hwy miles, 240 mile commute to work daily. Luckily I get paid for mileage so it allows me to replace the drive train every few years if I want and buy lots of mods.

 

i use full-synthetic on all my cars. it can never go wrong..just dont wanna drive my car wayyy too much....06 with 22000 miles already... its only been a year too.

 

Used syn since 10,000 now it needs a new engine now at 78,000 2003 AT go figuire. It has us all puzzled. Good thing I bought that extended warranty for the one and only time....

 

mine came with full synth and the dealer uses M1. Nuff said.

 

Moved to synthetic on my 04 6MT sedan since 500 miles on the carand haven't lost a single drop oil having 46k on the car. Tell them stop making POS engines.

 

i am an a.s.e certified mechanic with 10 years experience and heres my take on synthetic oil, once you use it you must continue to use it or you will get oil leaks (seals,gaskets,etc.,) do not start using synthetic oil until your car has atleast 10k miles on it but not more than 100k. synthetic oil is far superior to conventional oil in every way shape and form. if anyone ever says that synthetic oil is not reccomended for a certain engine they are STUPID. oil is a lubricant. engines need lubrication and they should get the best lubrication possible depending on driving habits.