Jeez, Chris. can't you at least be an agreeable contrarian? Must you be SO damm-nably disagreeable? You're constantly nipping at the heels of folks that have forgotten more than YOU will ever know. You need a time out. A long one.
Back to the thread..
Originally Posted By: JohnBrowning
I know I have seldom been impressed with any extended oil changes UOA especially with the bypass set-up. I mean if you can not tell the difference with that system as opposed to nothing then what is the point. Same thing for excessive filter changes. It makes it hard to really get a handle of the UOA since almost no one does this! I mean I change my oil and filter every 6 months. I do not change the oil every 6 months and filter every three plus top up. Even when people go 9 months or 10K+ almost none of them change the filter and alot do not even bother to top off so these types of UOA make it hard to really see what is going on since new filters and new oil are being added regularly it skews the results in my opinion.
I agree with JB here. It isn't a knock on the Amsoil to question a few things on the UOA. One, why the higher number on the Moly? 2>6? Also, the calcium number is monstrous. Even with virgin oil top-ups, it's half again as high as the uni-average.
Also, MAYBE, maybe, mind you, I'd change the filter at tenK, but I would resist. I don't believe these filters would load up even at 10K. If it were I doing this long OCI, I would pick the oversize Amsoil filter for your car (assuming it would fit) and run that one the entire 20K. I bet you'd see better insoluable count (for what THAT would be worth), but you'd get the same service on one excellent filter, and the Amsoil is exactly the filter for the long OCI. Just a layman's viewpoint here, but the zinc, calcium and phosphorous numbers testify to the excessive nature of the filter changing top-ups. Even at 20K, you're wasting this oil with the top-ups, you aren't USING it.
I'd love to see this car do a true 20K OCI. ONE Amsoil oversize filter, running the same oil (or even better, the 0W-20or 5W-20 in the same syn), and the only oil added is topping for consumption. Look at the fuel, water and anti-freeze contaminants! Non-existent. So the classic factors that wear out oil don't come into play in this engine. So, instead of blowing $30.00 or more (and not a little time) on filters and topoff oil, I'd rather see an UOA at 15K. It's a very tight engine,. I'd get a kick out of seeing the 20K UOA in a TRUE 20K OCI. I'd say with the topping, this cumulative effect here renders this more of a 10 or 12 K UOA, if that. But this oil, and this car could do the distance, easy.
By the way, if you don't mind, since the calcium, zinc, and phosphorus numbers ARE so high, and the contaminants ARE so low, can I come by and pick up the "old" oil and filters? I could do a 7500 mile OCI on my Hyundai with your old oil EASY.
