Originally Posted By: fdcg27
Okay, given the one UOA of Synpower posted in this thread, which happened to be from a Toyota V-6, I'd say that Synpower looks iffy for 10K drains.
I'd personally use M1 AFE.
WRT Toyota having done their homework, I wouldn't have doubted that Honda had done the same with the VCM implementation on the V-6. Guess Honda must have used the Cliff's Notes version instead.
I'm the owner of that Toyota engine that ran ~7,000 miles on SynPower. Would I have liked to seen a little higher TBN, sure, who wouldn't. But that oil was in use throughout some pretty harsh conditions detailed below...
This OCI/UOA was performed prior to the car moving to Florida. This oil was in use from Haloween 2015 to May 22, 2016 during that time the car was in Marquette Michigan through the winter and saw several months of winter driving and idling. The GF who drives the car uses the remote start religiously especially in the winter, sometimes for more than one 15 minute cycle if she gets distracted. That being said I conservatively estimate this OCI has no less than 40 hours of the car idling in the driveway or parking lot based on 6 months, 5 days per week, twice per day at 10 minutes each time. That certainly doesn't include idling in traffic or stop lights, weekends, going out to eat etc so I'm sure the idle hours in the cold are much much higher than that. I'd estimate 100+ of which 40 hours are cold start warm ups.
Also during this OCI there were weeks on end with night time lows in the -15 to -25 F range with daytime highs in the single digits. Also a good portion of her trips save for a trip from Marquette to Detroit and the trip to Florida were all short trips of less than 5 miles.
I say all that to say this, although the engine itself may not be hard on oil, the way it was used during this OCI was certainly not easy on oil.
Now that the car is in Florida her daily commute is 108 miles round trip, she still uses the remote starter but it's for AC now instead of heat.
Current fill is 4 quarts M1 5w30 SM spec (leftover from my 427 Corvette) and one quart Redline 5w30 (leftover from my Supercharged 2002 Tacoma) with another FL910S filter the oil currently has ~4500 miles on it. Plan to sample or maybe change it and sample at 7,500 miles, haven't decided if I'm going to leave it in use yet or not.