Here's the final UOA for my '08 Civic Si Sedan. This car was a joy to own, drive and modify but we had our fourth child last fall and my business keeps growing so I needed to make my 4Runner my daily driver, work truck, tow vehicle, etc. and bought a 2014 Honda Odyssey as the main family vehicle.
This run was the first run with Pennzoil Ultra, all others having been Platinum and I have done and posted UOAs for every OCI including the factory fill. About half-way through this OCI we moved to a new home and I didn't get my new solar panel system up and running until after I sold the vehicle so I was not preheating the engine with the block heater for the last 4-5k miles like I had been doing for a few years (possible explanation for the increase in Al and insolubles and decrease in viscosity but those numbers are so low anyway).
I had a one of the tuners from e-Tunez dial in my tune remotely via datalogs to the point that ignition timing and fuel values were amazingly good, ensuring that there was absolutely no knock that could be causing the higher-than-average Pb that I've seen for most of the life of the vehicle. At this point the only conclusion I can speculate on is that this specific engine just throws a little extra lead or that the legend that an aftermarket crank pulley which doesn't contain a harmonic balancer is causing the elevated Pb values. If I was keeping the vehicle I would have pulled the aftermarket pulley kit and install the stock components for the new OCI and see if Pb started to drop over time but that experiment won't be happening on my watch, oh well.
What an amazing engine! I ended up with a lifetime average of 34.X MPG, even with many of the miles being rural city, with trips less than 5 miles and summer high performance tires for the past 32k miles and plenty of trips over 8000 RPM (only on a warm engine).
This run was the first run with Pennzoil Ultra, all others having been Platinum and I have done and posted UOAs for every OCI including the factory fill. About half-way through this OCI we moved to a new home and I didn't get my new solar panel system up and running until after I sold the vehicle so I was not preheating the engine with the block heater for the last 4-5k miles like I had been doing for a few years (possible explanation for the increase in Al and insolubles and decrease in viscosity but those numbers are so low anyway).
I had a one of the tuners from e-Tunez dial in my tune remotely via datalogs to the point that ignition timing and fuel values were amazingly good, ensuring that there was absolutely no knock that could be causing the higher-than-average Pb that I've seen for most of the life of the vehicle. At this point the only conclusion I can speculate on is that this specific engine just throws a little extra lead or that the legend that an aftermarket crank pulley which doesn't contain a harmonic balancer is causing the elevated Pb values. If I was keeping the vehicle I would have pulled the aftermarket pulley kit and install the stock components for the new OCI and see if Pb started to drop over time but that experiment won't be happening on my watch, oh well.
What an amazing engine! I ended up with a lifetime average of 34.X MPG, even with many of the miles being rural city, with trips less than 5 miles and summer high performance tires for the past 32k miles and plenty of trips over 8000 RPM (only on a warm engine).
