Nissan 370Z Forum - View Single Post - Why you don't ever let dealerships do oil changes.

Fountainhead · 04-08-2014, 10:41 AM

Oil in cooler with hoses up never (well never is a long time but it doesn't get removed) changes, it shouldn't even factor in except at initial fill. All other things being equal the oil in should = the oil out. The only variable is the size of the cooler / aftermarket oil pan that will affect initial fill up.

PS: OP, your oil will never be as clear as a complete oil change, because you're not changing ALL the oil, you're mixing in the old oil with new oil. Unless you do a couple/three complete flushes your oil will never completely change with the cooler.

04-08-2014, 10:41 AM	#31 (permalink)
Fountainhead Track Member Join Date: Feb 2013 Location: FL Posts: 834 Drives: 2019 Civic Type R Rep Power: 15	Oil in cooler with hoses up never (well never is a long time but it doesn't get removed) changes, it shouldn't even factor in except at initial fill. All other things being equal the oil in should = the oil out. The only variable is the size of the cooler / aftermarket oil pan that will affect initial fill up. PS: OP, your oil will never be as clear as a complete oil change, because you're not changing ALL the oil, you're mixing in the old oil with new oil. Unless you do a couple/three complete flushes your oil will never completely change with the cooler. Last edited by Fountainhead; 04-08-2014 at 10:53 AM.