Bhollier
FRF Addict
Thanks for the note. Forgot about this poll.@Bhollier you may want to update this thread too with your additive findings.
Everyone else - if you had a cam phaser failure / cold start rattle, put it in this poll so the OP has an accurate count.
Here is what I posted on the other thread:
I have report back on my test with the additive we developed. Did the oil change on my Raptor yesterday. New oil going in was not treat with the additive, after running the truck for about 3 hrs then starting up cold this morning (38 deg F ambient) and sitting overnight. Rattle was back. Prior to the oil change the rattle was basically gone with the exception of one start after the truck sat for 6 days without starting and starting after 6 days with an ambient temp of 45 deg F. I went ahead and did another round of treatment about an hour ago and let the motor run for about 30 min to properly soak the engine again with the additive. I won't know for sure if this has an effect until I have another cold start. Within 10 min of adding the additive I did notice a distinct difference in engine sound, much smoother running and quite.
I have also sent off the oil sample to Blackstone labs for a full analysis since my lab isn't set up for engine oils (we do more refining tests). Will post the results once I have them back.