The Ford Focus Forum | Powered by Focaljet - View Single Post - Brown coolant.. Back again with a vegeance

**FORDSVTPARTS** · 10-08-2006, 05:50 PM

I would suggest getting it in to a Ford dealer and have them flush it.

You might not want to but Ford has a very good solution to this issue due to a problem with brown coolant on pushrod 3.0 v6's in the Taurus and Sable.

The problem in those cars was high acidity in the coolant and in some cases it actually ate holes in the core plugs of the block.

They use a powerful cleaner to flush it clean and then when the system is clean they put in a neutralizing agent that is normally used in diesel engines that prevents the rust from coming back.

I have never seen this in a Focus before and I am not positive that they can do this since the Focus has an aluminum head but it would be worthwhile checking.

Or you could just buy the neutralizer and have your guy add it after another flush.

Again, I am not sure this is okay to do with an aluminum head but I'm not at work so I can't check to be sure.

Regardless, you do NOT want to leave it this way because odds are it's working on the core plugs in your engine right now.

10-08-2006, 05:50 PM	#26 (permalink)
FORDSVTPARTS Premier Sponsor Join Date: Nov 2004 Location: Minnesota Posts: 8,236	Re: Brown coolant.. Back again with a vegeance I would suggest getting it in to a Ford dealer and have them flush it. You might not want to but Ford has a very good solution to this issue due to a problem with brown coolant on pushrod 3.0 v6's in the Taurus and Sable. The problem in those cars was high acidity in the coolant and in some cases it actually ate holes in the core plugs of the block. They use a powerful cleaner to flush it clean and then when the system is clean they put in a neutralizing agent that is normally used in diesel engines that prevents the rust from coming back. I have never seen this in a Focus before and I am not positive that they can do this since the Focus has an aluminum head but it would be worthwhile checking. Or you could just buy the neutralizer and have your guy add it after another flush. Again, I am not sure this is okay to do with an aluminum head but I'm not at work so I can't check to be sure. Regardless, you do NOT want to leave it this way because odds are it's working on the core plugs in your engine right now. __________________ To order from me just call 1-800-328-9552 and ask for Steve or use one of the methods below. Now accepting online orders here http://www.tousleyfordparts.com You can also find us here http://forums.focaljet.com/tousley-ford/ 2002 Silver SVT #2952 , custom CAI , Stage 2 throttle body, VF rear mount, FRPP 9mm wires, EAP/MACH HID's, Borla exhaust, K-W springs, FRPP UDP, Screamin Demon coil, Tuned by Mike at Unique Tuning in S.C.