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Will HPS harm my catalytic converters?
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Will HPS harm my catalytic converters?
What is the difference between HPS® and Royal Purple® API-licensed motor oils?
August 17, 2018
Can I use HPS in my diesel engine?
August 17, 2018
A
Will HPS harm my catalytic converters?
No. Testing has shown no short or long term adverse affects on catalysts in mechanically sound vehicles.
Category: Motor Oil
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