- Patented formula treats the metal.
- Protects against friction and heat.
- For new and high mileage vehicles.
- Maintains superior Prolong protection.
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For use after initial Prolong Engine Treatment.
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For vehicles up to 3.5L only.
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Just pour into engine after every oil change.
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Prolong Engine Treatment Booster economically maintains the high level of protection achieved after you've used the first initial 354ml Prolong Engine Treatment.
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