Indeed, it would be nice, but unfortunately, we have no control over that. At the same time, per ScionFred's example, just because it's the earlier pump, there's no certainty of failure. Still, I surely wouldn't mind having mine replaced with the the latest and greatest (as long as their techs don't manage to injure my engine )!

 

im getting my water pump replaced under warranty and ignition coils replaced here in a couple hours. so hopefully its a better water pump and nothing else happens again

 

I'm doing both today also.

 

It's best that you had the wisdom to replace the pump and not try and use an additive to stop the seal from leaking. However I gues you are still under warranty for the work.

Check the repair order and see what part number they used for the replacement to see of you got the lastest and greatest pump.

Good Luck!!

 

Is there something wrong with adding Prestone Cooling System Antifreeze Treatment? Please take this opportunity to make your first positive contribution to the forum by explaining.

This is what Prestone has to say about the product:

"Patented grafted co-polymer technology helps guard against water pump failure with a super slick layer of heat-activated protection. When used as directed the treatment can help extend water pump life by reducing seal face friction and cavitation-erosion-corrosion damage to the water pump housing and impeller."

 

It's very obvious who your post was meant for... FYI additives like this are absolutely essential and already included in antifreeze. Since the additive package in Toyota's AF doesn't appear to be doing such a great job of protecting the water pump seals, I ask again why you recommend against adding additional water pump treatment?

The only argument I can see against this would be to want the water pump to fail prematurely while still under warranty. In my case I don't care because I wouldn't let the dealer change the WP anyway. I'd prefer to do it myself so I know it's done right and my car isn't returned with new scratches, oil stains on the seats, etc.

To each his own. How's the class action recruiting going?



Edit: I see that in the future I'll have to quote you so you won't be able to edit and delete your posts like you just did!



.

 

Drat, I dropped by PepBoys for a couple NPT plugs today and it didn't even occur to me to look for the Prestone additive. Since I now need to return them, hopefully I'll remember tomorrow !

 

I hope it helps to extend your water pump life. Especially since your warranty will no doubt expire based on time rather than mileage and mileage seems to be the deciding factor in pump failure.

 

Thanks ! Yeah, I didn't get the extended warranty (they tried ) and my mileage is slow to accumulate. Advantage being I'm more likely to learn of issues, and hopefully solutions, before I actually hit them. Many thanks to the many communicative contributors to this forum !

 

Armed with Mr. Trevor's new water pump part number, I looked at my recent Scion repair receipt.

The pump part number is indeed given as 16100-0h050, so i guess I got the "new" version of water pump.

However, I also see that they specified "0272-SLLC2" as the coolant used. I've googled this number to find out something about this particular coolant's characteristics, but find next to nothing.

Since Mr. Fred has taught me that coolant DOES matter, and also because my Toyota service rep. originally alluded to the possibility that my OEM pump had failed due to incompatibility with the coolant type, I'm curious what coolant other ScionLifers have had installed at their respective stealerships.

Maybe I should change out the stuff I've got while the going's good?

Many thanks,
Marc

 

Looked for the Prestone Cooling System Treatment product today but drew a blank. Looked at the Prestone site and seems my nearest supplier is Walmart -- guess I should drop by !

I doubt the dealership would be willing to install anything other than Toyota's own coolant product. However, there are other branded products that appear to me and others to have the same specs. Here's what I'm currently using as my "top off" coolant in both my vehicles, but I expect most will direct you to continue using the Toyota -- guess it comes down to whatever seems most comfortable to you !

https://www.scionlife.com/forums/sho...d.php?t=200553

 

I don't think it's the coolant or we would have a much larger list of people reporting that they have had to replace their pumps. Maybe the pumps are made in different parts of the world and some place produce better products or produced too fast to meet production demands, who knows?

 

As you say, who knows? Does seem as though there's some tolerance variance ! Speaking for myself, it's cheaper/simpler to add a treatment than to replace the pump, and I personally prefer not to have to replace time-consuming engine components if avoidable. Like Fred, I have a high distrust of dealership "tech" handling of my xB2 -- the first "freebie" oil change was enough to jaundice me ! It hasn't been back since.

 

Whatever makes you feel better, it's your money.

If all new xB's have the same pump and same coolant then the coolant would start it's distructive process on the pump and failures would be like clockwork.

Just my opinion.

 

However, we already know the production pump has been changed! And to suggest the coolant has a "destructive process" is perhaps a tad strong ! Are you suggesting my money would be better spent replacing the old pump in favor of the new, regardless of lack of symptoms?

 

No! Don't replace the pump unless it leaks, why waste your money. I'm just saying that what you do to your xb is OK since you paid for it.

The new water pump we assume would have changes, however, we don't know what. I just don't think that the coolant is the problem as much as the water pump itself is the problem, workmanship or materials, ect.

Just a guess.

 

Hey Marc, I'd be very surprised if they added anything other than genuine Toyota antifreeze (red). I'm not aware of a better product for Toyotas so that's what I'll continue to use. I think that the prematurely failing water pumps are caused more by some defect in the pump rather than inadequate protection from the Toyota AF. The fact that there is a new part number for the WP strongly suggests to me that a change has been made to address the issue. I wouldn't even add the Prestone treatment if I had the new 0h50 pump but for those of us with the earlier 0h40 pump who would like to prolong it's service life, there's not much to lose by adding a water pump treatment.

IMO you're good to go with the new water pump and Toyota AF. BTW, never add tap water to your engine coolant. Use only distilled water with full strength AF or use pre-mixed 50/50 AF.

 

Hit Walmart today and picked up a bottle of the Prestone Treatment, cost me roughly $6 -- think I'll survive ! Will divide it between the car and my bottle of concentrate (NAPA/Peak Extended Life)!

 

My waterpump is still going strong at 65K... The level was dropping at one point, but no signs of any leaking. I just topped it off and that was it. Have not touched it in months and still at full level.

I won't replace it unless it gets really bad. *knock on wood*

 

Interestingly it appears that of the respondents in this thread, about 1/2 have had a water pump fail and the other 1/2 have not. Typically in a thread like this one might expect to hear from the majority of those who have experienced a water pump failure but only a small minority of those who have not. I myself passed on this thread many times because it didn't apply to me before finally responding due to my objection to the "epidemic" characterization.

Perhaps I'm reading too much into this but my impression is that while the early model water pump is certainly a weak point, it's hardly an epidemic problem. Typically most 4 cyl engine water pumps are replaced at ~60k with the timing belt but since we have a chain instead, it seems that many XB2 owners will end up replacing a water pump before 100k or possibly much sooner. It's far too soon to speculate on the longevity of the revised replacement pumps.

Time for a poll?