Switching to synthetic oil...

[CIP57_imp]

Not sure I want to participate in this but here goes..

Why would one NOT run synthetic?

Well,

Have never used synthetic..don't see where it is an advantage

Change oil at 4000 mile service intervals on all my vehicles ( exception..put fresh oil in my ST before going to Cali, changed it when I got back 5424 miles)

Always use a new oil filter even though Honda says I can skip every other oil change

Have never had an engine failure for oil related reasons or any other reasons for that matter.. I've never had an engine failure for any reason

Have only read of one or two instances where riders actually stretched their changing habits when changing to synthetic ie: going 8-10,000 miles between changes. Most still change at 3-4000 miles ... Anyone here run their synthetic 8,000 miles?

You can run synthetic longer in car ,truck etc do to the fact it does not run through other parts of the motor therefore does not get dirty and contaminated at 3000mi.

Synthetics run cleaner and leave less deposits than dino that's why you should not run them in vehicle's with high mileage that have never run synthetic. The tend to clean deposit and seals than can cause seal breakdown. The oil is thinner when hot and gets into area dino doesn't.

Also the longer you stretch out the number 15-40 10-40 the more insert ingredients are added to get that number higher to make the oil thicker. All 10W's start with straight 10W oil. The larger the span between ### the more crap is added to the oil.

Edit: Also synthetic will attach and bond better to transmission gears causing less wear. Did you ever try that spin wheel in the auto parts store that show synthetic to dino, how much longer the residual bonds not to mention cold start ups.

Don't take my word for it, do a internet search to confirm the above.