Nissan 370Z Forum - View Single Post - What is the best way to drain dirty oils in oil cooler???

roy'sz · 02-26-2012, 04:06 PM

I've had my cooler for 18,000 miles....and haven't drained it once. Keep in mind that as long as you aren't mixing the brand and weight of oils you will be fine. All you are doing is mixing 1qt used with 5 quarts new, it honestly doesn't harm it that much. If you are that concerned than fill it, run it, and drain out a qt of oil and replace with one fresh. Honestly you really won't notice the mixing of the "bad" oil and the fittings on the cooler, the body panels and tray panels are not designed to be taken apart every 3000 miles.

02-26-2012, 04:06 PM	#2 (permalink)
roy'sz A True Z Fanatic Join Date: Aug 2011 Location: palmdale, ca Posts: 1,299 Drives: 2010 nissan 370z Rep Power: 16	I've had my cooler for 18,000 miles....and haven't drained it once. Keep in mind that as long as you aren't mixing the brand and weight of oils you will be fine. All you are doing is mixing 1qt used with 5 quarts new, it honestly doesn't harm it that much. If you are that concerned than fill it, run it, and drain out a qt of oil and replace with one fresh. Honestly you really won't notice the mixing of the "bad" oil and the fittings on the cooler, the body panels and tray panels are not designed to be taken apart every 3000 miles.