I'm not much of a mechanic. My dad taught me that oil is the "lifeblood" of any engine. I change (or have changed) all my oil at half the recommended intervals. This includes the vehicles with synthetic and my outboards.
I have NEVER had an oil related problem with any motor, other than a push mower.
I'm not wealthy, but oil changes are a hell of a lot cheaper than mechanics.
I follow the same procedure. With everything.
In fact, I usually change it early on my tractors and equipment. Pickups get changed when they tell me they need it.
