</font><font color="blue" class="small">( Just buy 100% and not some below standard oil with some 10% synthetic base. )</font>
Do youy have any proof to back up your blanket claim that any synthetic blend is using a below standard base mix?
I find it hard to believe an oil company would actually produce a second grade oil, just to mix it up to spec.
It is widly known fact that hi production manufacturing plants rarely produce different grades of goods, even if the goods are re-branded and sold under another name. Look at brass... remington and UMC roll out of the same plant. I'v examaned both casings and find noting more than headstamp differences, with same life expectancy and failure rate in re-loading.
Same with computers.. early on in 486 production, there actually were seperate lines for different speeds, and the sx / dx production. Later to streamline and cut costs, all 486 chips were produced with the math co-processor, and were dx, but were then factory disabled to make it an sx chip. Same with speeds. Processors are batch produced. Failure rate percentages dictates which speed classifications were used when prodicing chips out of specific die sized silicon. Obviously different die size lots produced different speed ranges, etc.
Equally, I find it unrealistic that an oil company would run a secondary refinery operation.. and turn out a 'cheap' oil, just to blend it... Mass production yeilds a less expensive product.. the less tooling you have to keep up with, the lower the overhead costs...otherwise it would be counter-productive to profit.. which is after all, the universal driving factor behind most business entities.
Again, as I have no data this is only my opinion. But in this litigous country, I don't think an oil company woul expose itself to such great consumer liability with a substandard oil product. I would think natural attrition would control their market shaer.. i.e. if brand 'X' yeilded an obviously higher failure rate on engines.. then it's sales would decrease, and it's market share fall, untill it changed practices, or went belly-up.
Soundguy