I am thinking just do the flush. Your delta's are still fine.
I don't think any long term damage at this time.
well I did the flush - didn't really notice a whole lot of dirt / debris coming out. used the ford gold and diluted 50/50 w/ distilled water as recommended. now my water & oil are closer in delta but - my water goes from 193 - 205 and my oil is from 197 - 210 doesn't really stay at one reading real long - even on cruise control 78 mph. I really thought I remember the oil steady @ 203. any thoughts?
If you are steady cruising on level road and it is fluctuating like that. It would make me wonder if during the flush procedure you got some stuff in one of the t stats.
So were these fluctuations consistant? Can you time them between a certain interval?
if you mean the fluctuations between the 2 temps - yes they would both fluctuate. as far as flat ground - here in So. Florida the only time it's not flat is at a land fill. went to Miami 90+ miles and they would change consistently. outside temp 65* and rainy the whole trip. I don't if this this information is what you're asking. I just know my truck and something is definitely different. what is the temp range on the oil and water? unable to really time - changes fairly quick - seconds ? thanks again