Originally Posted By: ZZman
So all the claims the manufactures of the oil make are lies? All their testing is worthless and no good?
I am not saying that you could not run vehicles the same with a conv or syn oil and have them both last because you might. But will they run as efficiently? Be as clean inside? Hard to say as I am sure you and I haven't torn down engines and done exhaustive testing like the oil and car companies have.
But what is your scientific proof that conventional oil is
just as good?
It's called ALL THE VEHICLES OUT THERE NOT HAVING ANY ISSUES.
They are lucky to get regular oil changes. Yet they run conventional oil (almost 90% of the vehicles out there are) and get down the road just fine.
Funny, none of the manuals I've EVER received with my vehicles over the last 30 plus years (from Ford, GM, Honda, Toyota, Datsun, VW, Dodge and Jeep) have ever said for better protection, run Syn oil.
One did say if you run syn, change it out at the same OCI as conventional.
But saying that Conventional oil is a downgrade is not accurate statement.
Esp when you are talking about a 3k OCI in a Ford V6 truck motor.
Corvette motor? Since GM was trying to get by with not having to put in a oil cooler then you NEED to run it.
A lot of difference from NEED to WANT.
The OP does not need to worry what oil he uses as long as it meets what Ford asks for.
He just needs to change it.
And I had to tear down my 3.0 Taurus TWICE in 108k miles. This was a rent-a-car (so we KNOW it had impeccable oil changes in its first 21k miles)
and it was SPOTLESS inside the engine both times.
So the cleanness issue I'm not worried about either.
Bill