I have been using royal purple synthetic oil for several years, it allows longer oil change intervals and has improved my gas mileage.
Verified purchase: Yes | Condition: New
My Toyota Avalon Hybrid was getting 40 mpg...now its up to 44 mpg by only changing to this oil.
Verified purchase: Yes | Condition: New
I've had Royal Purple in my engine, my transmission (manual) and my boat lower unit. Always been very happy with the results.
Verified purchase: Yes | Condition: New
I have used Royal purple oils for over twenty years and I still use it and always will
Verified purchase: Yes | Condition: New
Keeps my new vehicle running like new. Definitely a high performance product
Verified purchase: Yes | Condition: New
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