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#2575900 - 03/22/12 09:47 AM GM Dex-Cool, 116K miles, 04 Chevy 2500HD
dhellman12 Offline

Registered: 08/29/11
Posts: 194
Loc: Keller, TX
Decided to send in a sample on both my 2004's (Dmax & Tahoe). For grins I also checked these using the little prestone hand tool with the floating balls. This truck only floated 3 of the 5, but according to the report is in much better shape.

Note the capacity is 24 quarts, not gallons as listed by OAI.

04DMax 6.6L - Amsoil AME 15w40 180k
04Tahoe 5.3L - Amsoil ASL 5w30 187k

#2575973 - 03/22/12 10:51 AM Re: GM Dex-Cool, 116K miles, 04 Chevy 2500HD [Re: dhellman12]
SteveSRT8 Offline

Registered: 10/10/08
Posts: 16954
Loc: Sunny Florida
Hahaha, yeah, that's quite an upgraded cooling capacity! Must have a tank in the bed!

Dexcool is a true long life coolant. Use it and use it properly and it will preserve your truck very well.
"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
Just like we go to Publix

#2586895 - 04/02/12 10:08 AM Re: GM Dex-Cool, 116K miles, 04 Chevy 2500HD [Re: dhellman12]
dnewton3 Offline

Registered: 05/14/07
Posts: 6299
Loc: Indianapolis, IN
Looks good, overall.

I've added a coolant bypass filter to my Dmax. I'm hoping that will keep the debris out of the oil cooler. Should also help keep the coolant pristine for the 5 year CCI.

Edited by dnewton3 (04/02/12 10:14 AM)
Conventionals vs. Synthetics isn't about which is "better"; it's about which lasts longer, while assuring safe operation, in relation to cost. Any product can be over or under utilized. The same applies to filters.
Make an informed decision; first consider your operating conditions, next determine your maintenance plan, and then pick your lube and filter. Don't do it the other way around ...