Justin, don't get premixed coolant. You won't be able to get all the flush water out of the system, so when you refill with 50/50, you'll have a solution that's more dilute than that.

The manual says it holds about 8 gallons, so if you buy 4 jugs of concentrate, you'll be about right. Put in the concentrate and then top off with distilled water.

Search Gooch's posts. He has a post that will spell it out for you as far as flushing and changing out coolant.

 

Thanks for the advise. I did a little research on the website of Final Charge Global.....found that their 50/50 mix doesn't have the required markings.....but their concentrated version does. Says you can go 600,000 miles on the stuff. Don't think my truck will even last that long. And also mentioned that SCA additives are not required....what do you think?

 

Just replied to your other post.

According to Gooch, International doesn't recommend the Extended Life stuff in engines built before 2/99, so that means standard green with SCA's. Or you could use Purple Prestone Heavy Duty Precharged that NAPA carries. I happen to know where there's part of a jug.

 

Good advice. /ubbthreads/images/graemlins/smile.gif

A bone dry engine, radiator, oil cooler, heater core, hoses, etc. will leave you needing 8 gallons of coolant mixture. But you'll never have a bone dry system...there will always be some residual water left after flushing. So if you want a 50/50 mix, you'll need 4 gallons of coolant concentrate. You can do some easy math to figure how much more concentrate you'll need if you want better freeze protection than 50/50. Add that amount of coolant concentrate and top off with distilled water. Here in Alaska, I'd recommend having a shop double check your freeze protection with a good refractometer.

Final Charge is excellent coolant...but not necessarily for your early '99. Engines built 2/2/99-up (SN 940614-up) were revised to be more compatible with these types of coolants. Seals, gaskets, injector sleeves, sensors, front covers, etc. Although some folks use them in early 99's without issue. The choice is yours.

 

I was at Walmart last night. I saw that their concentrated house brand coolant has an ASTM D-4985 rating.

 

I use to (a long time ago) love saying "I'm going to the tool crib to get the Differential Refractometer to check the prist" /ubbthreads/images/graemlins/warmsmile.giffng's would look at you and say whaaaaaaats he talking bout /ubbthreads/images/graemlins/vulnerable.gif

 

Justin
I just did a flush on mine. Go to the international dealer by the ship creek gate and ask for the green stuff not premix. I drained everything I could and fit 61/2-7 gal of fluid back in. Add the 4 gal of green stuff first than top it off with distilled water.
DENNY