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Pro-Blend 4032 40-Below Engine Coolant Additive, 30 Oz.

SAME DAY SHIPPING! Order within the next 17 hours 6 minutes and receive same day shipping

Specs
Sold in Quantity:
Each
Liquid Measurement:
30
Notes
Compatible with distilled water and ethylene glycol antifreeze only. Use a 80% water and 20% Pro-Blend 40 Below mix.
Pro-Blend 4032 40-Below Engine Coolant Additive, 30 Oz.

Click image to enlarge

Please note the following about this product:

  • This product is discontinued.

Details

Reviews (13)

Q & A (3)

What's in the Box

Info

Clearance!! 

 No Warranty, No Returns On Garage Sale Items

Reduces coolant temps up to 40° F. Prevents coolant temperature from rising excessively under extreme racing conditions. 30 oz. Use a 80% water and 20% Pro-Blend 40 Below mix.

NOTE: Do NOT use with propylene glycol antifreeze, stop leak, or block sealer. Can be used with distilled water and ethylene glycol antifreeze.

Learn more about how cooling systems work with proper coolant mixture and additives by reading our tech article. Cooling System Principles.   

Customer Reviews

Rated 4.8 out of 5 by 13 reviewers.
RATING BREAKDOWN
13 reviews
5 Stars
11
4 Stars
1
3 Stars
1
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

Markie
Verified Purchaser
Verified Reviewer
Colorado

Really works

June 10, 2015
Product keeps even a 514 BB Ford cool in a Cobra with a small radiator.
Pros:
  • Keeps My 514 Cobra Cool
Cons:
  • None
Yes, I recommend this product.
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Jobrien992
Verified Purchaser
Libertyville, IL, USA

It's a miracle!!!

July 19, 2014
I tried several products to cool my Olds 403. Nothing could keep it under a scorching 220 until I tried 40 below. Now I run 180 to 200 consistently. Thank you 40 Below J.B. O'Brien
Pros:
  • It works
Yes, I recommend this product.
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Jobrien992
Verified Purchaser
Libertyville, IL, USA

It's a miracle!!!

July 19, 2014
I tried several products to cool my Olds 403. Nothing could keep it under a scorching 220 until I tried 40 below. Now I run 180 to 200 consistently. Thank you 40 Below J.B. O'Brien
Pros:
  • It works
Yes, I recommend this product.
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Tom53MGTD
Verified Purchaser
Fort Myers, Florida

Works really well.!.

April 25, 2014
I have a 1953 MG TD that had been running hot, actually over-heating. Of course, it doesn't help I live in South Florida. Adding Pro-blend 40 Below has helped tremendously in increasing my run-time before the water temperature starts to over-heat. Overall, works really well and I don't have to be concerned about how far I'm going for a particular run or event. Recommend it highly.
Yes, I recommend this product.
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KentuckyBill
Verified Purchaser
Palmetto, FL, USA

This coolant additive is the one that re

August 10, 2013
I drive a 1923 ford t-bucket which has a pretty radical engine. I tried most all of the other brands of coolant additive but couldn't tell if they did any good or not. Last summer when I tried a can of 40 below it actually made a difference. I live in Florida and summer cruising can be pretty brutal for the hotrods. 40 Below actually did the job. This review is totally honest. Bill, Florida
Pros:
  • really worked for me
Cons:
  • it's not cheap
Yes, I recommend this product.
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BIG MONKEY
Verified Purchaser
RAMONA CA.

WOW THIS STUFF WORKS GREAT DROP 30 DEG.

August 13, 2012
IT DROP MY SYSTEM FROM 210/220 TO 180/190 TEMP, UNDER W.O.T. RACING THE LUCAS OFF ROAD SERIES.
Yes, I recommend this product.
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BIG MONKEY
Verified Purchaser
RAMONA CA.

FROM 220 TO 180 CONSISTENT

June 02, 2012
IN A CLASS 1 TRUGGY FOR THE LUCAS OFF ROAD SERIES.
Pros:
  • Improves Engine Efficiency
Yes, I recommend this product.
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Rappahoe
Verified Purchaser
Boonville, Missouri

Now a REAL COOL 38 Chevrolet

September 28, 2011
Had trouble keeping my 350 cu in engine in my 38 chevrolet COOL added the 40 Below and now no boil overs and temperature stays around 200. GREAT PRODUCT THANKS
Pros:
  • Easy To Install
  • Improves Engine Efficiency
Yes, I recommend this product.
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Rappahoe
Verified Purchaser
Boonville, Missouri

Now a REAL COOL 38 Chevrolet

September 28, 2011
Had trouble keeping my 350 cu in engine in my 38 chevrolet COOL added the 40 Below and now no boil overs and temperature stays around 200. GREAT PRODUCT THANKS
Pros:
  • Improves Engine Efficiency
  • Easy To Install
Yes, I recommend this product.
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Mike Tree Guy
Verified Purchaser
Phila. Pa

so far so good.

June 27, 2011
I've only had this product in the radiator about a month so far no over heating issues. I was getting over heating problems with my 50 chevy pickup, when I would sit idling. The truck has a 305 with an electric fan because of space. I added this product and put a higher pound radiator cap and it seems to have worked.
Pros:
  • Easy To Install
Yes, I recommend this product.
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Page 1 of 2

Product Q&A

3 questions : 5 answers

2 answers

best mix What is the best mixture for the best maximum cooling, with distilled water or anti freeze and is it safe for aluminum??

BillyEmile
April 22, 2013

best mix What is the best mixture for the best maximum cooling, with distilled water or anti freeze and is it safe for aluminum??

Answers

October 21, 2013
subieghia
80% distilled water to 20% pro blend.
April 22, 2013
Jason
Pro Blend 40 below works best with 80% distilled water, 20% ethylene glycol antifreeze and 1 can of 40 below. Instructions are on the can and this will work with aluminum heads and/or blocks.
1 answers

I have three questions. how much do you add ?Does it work with anti-freeze,and will it freeze? Thanks................Gus

Gus
Dawson Creek B.C
January 13, 2011

I have three questions. how much do you add ?Does it work with anti-freeze,and will it freeze? Thanks................Gus

Answers

January 20, 2011
Waymon
1.) How much do you add? Use as follows: one 30 oz. can for a small block Chevy, two 30 oz. cans for a big block Chevy, or if you have a cooling capacity of 4 gallons or less, one 30 oz. can will do. If over a 4 gallon cooling system you will need two 30 oz. cans. 2.) Will it work with antifreeze? The manufacture states the following : -Not to be used with any propylene glycol antifreeze -Not to be used with stop leak or radiator/block sealer -Best if used with distilled water -OK to use with ethylene glycol antifreeze 3.) Will it freeze? Yes it will freeze.
2 answers

what ratio of anti freeze and water should this stuff be mixed or still 50/50

Billy
October 14, 2012

what ratio of anti freeze and water should this stuff be mixed or still 50/50

Answers

July 20, 2014
Jobrien992
Go exactly as directions state. 1 gallon distillers water to one can 40 Below. Don't drain engine block.
October 15, 2012
Jason
Compatible with distilled water and ethylene glycol antifreeze only. Use a 80% water and 20% Pro-Blend 40 Below mix.
Page 1 of 1

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