corrosion around aluminum motor plate coolant holes

[SSDiv6]

Originally Posted by Dragsinger

Racers,

any suggestions to limit this corrosion?

It appears you are experiencing Electrolysis.

1. Use distilled water, not drinking or tap water.

2. Check the grounding of the engine to chassis and chassis to battery.

3. Add some Royal Purple - Purple Ice to the distilled water.

4. You can also have the plate anodized.