If you all say so. But if you look back at threads on this topic the numbers they sometimes provide aren't even close.
Kschachn, you are entirely right in questioning Blackstone's results. I find some comments really frightening but they're also not analysts, so take into perspective this is not what they do for a living. Molakule is the ONLY guy I'd bother reading on BITOG.
1. In all my testing, we debunked the myth that fuel dilution disappears on start up or after warm up. At tribologik we did close to 40 back to back tests with vehicles from V8's, I-4's, V-6s, and a V10. The most I saw was a .8-1% difference.
2. Fuel does not evaporate on start up, another myth of the industry, today's fuel chemistries force the oil to bond to the fuel.
3. His oil isn't in grade. Tribologik's supercomputer would have flagged that sample all day for fuel dilution based on viscosity measurement. And I HATE vis measurements.
4. His flash point at 380 + 6.97 @ 5,000 in my computer model approximates 7%FD.
5. My RC-F which is a far larger engine with exact same driving style if not harder, 75% less wear at 5,000 miles.
6. Nickel is showing, on this 3.5L, that is a valve guide metal. Not good.
7. If you're sending an aircraft UOA to Blackstone, I pray you have a parachute in your plane.
So when we read comments like, 0.5%, 2.5% FD who cares, I don't care as long as viscosity stays in grade. Ah yes, this is a typical comment I hear and it's a very bad comment. Here's why. FD creates deposits in the motor and corrodes the internals. It's not about whether your oil stays in grade, it's about your motor running efficiently. The difference between 1% FD reduction is a significant amount of $$ in fuel economy. His iron if I were guiding him would be 3ppm. for those that will argue not possible, check out my RC-F @5,000 miles post. I have a larger surface area, meaning I will always experience more wear, and I'm at 5ppm of iron for an engine that gets pushed harder and worse.
8. A good UOA with FTIR and GC is not more than $25. So it's cheaper to get a better UOA than Blackstone.
Why does Blackstone not have FTIR or GC? Because they like most, wouldn't really know what to do with the info. Polaris will tell you anything less than 3% FD is ok, why? Because they don't know how to reduce or control it. It's a tricky thing to control and handle. It took me close to a year of doing thousands of UOAs and guidance from none other than Terry Dyson to learn and understand it and that's not for UOA but rather just to learn how to control FD.
The reason they like flashpoint is because when it does show fuel it's always very bad. Meaning it's like an injector or another issue that is easy to figure. Anyone who thinks Blackstone isn't aware that flashpoint is good as useless for fuel dilution doesn't know this business. Blackstone is very intelligent when it comes to business and they want to keep people blind, they can't afford to spend as much time as they should for $28.
