Race Tech: Red Line Water Wetter® Corrosion Comparison
Red Line Water Wetter® not
only reduces cooling system temperatures but when used
with water as a coolant will help prevent
corrosion. Water Wetter® passes the most severe test
developed for automotive coolants,
when added to corrosive tap water and used in an automotive
cooling system. ASTM D2570 is an automotive coolant
test which uses a GM brass radiator,
GM water pump, and coolant hoses. The system circulates
the test coolant for 1064 hours at 190 degrees Fahrenheit
through a test reservoir simulating
an engine block which contains three test coupons
for each of six different cooling system metals. The
weight loss and condition of these coupons
is recorded and compared to results which are determined
by the ASTM committee to be requirements for adequate
cooling system protection.
The tests results below show Red Line Water Wetter®
used at 3.1% by volume and a “competitive” cooling system
additive also used at 3.1% in the ASTM D2570 Simulated
Service Corrosion Test performed by
an independent laboratory. Although the competitor
claimed to be the only coolant additive on the market
that passes ASTM D2570, they failed
the test using an unadulterated sample sent to an independent
laboratory. Red Line Water Wetter® passed with significant
margin to spare.
ASTM D2570 with 3.1% Volume Red Line Water Wetter®
| Test Metal |
Weight Loss, mg |
Average, mg |
Max Allowed, mg |
Pass/Fail |
| Copper |
9 |
6 |
4 |
6 |
20 |
Pass |
| 30a Solder |
20 |
30 |
24 |
25 |
60 |
Pass |
| Brass |
4 |
5 |
4 |
5 |
20 |
Pass |
| Steel |
3 |
5 |
3 |
4 |
20 |
Pass |
| Cast Iron |
0 |
0 |
0 |
0 |
20 |
Pass |
| Cast Aluminum |
36 |
35 |
31 |
34 |
60 |
Pass |
ASTM D2570 with 3.1% Volume Brand RP
| Test Metal |
Weight Loss, mg |
Average, mg |
Max Allowed, mg |
Pass/Fail |
| Copper |
51 |
56 |
56 |
54 |
20 |
Fail |
| 30a Solder |
65 |
73 |
64 |
67 |
60 |
Fail |
| Brass |
14 |
16 |
14 |
15 |
20 |
Pass |
| Steel |
422 |
142 |
316 |
293 |
20 |
Fail |
| Cast Iron |
85 |
131 |
133 |
116 |
20 |
Fail |
| Cast Aluminum |
145 |
153 |
145 |
148 |
60 |
Fail |
|