Royal Purple HMX 5W-30 High Mileage Motor Oil, Universal, 5 Quarts
Royal Purple HMX 5W-30 High Mileage Motor Oil, Universal, 5 Quarts
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Royal Purple HMX 5W-30 High Mileage Motor Oil, Universal, 5 Quarts

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Key item features

  • High Mileage: Specifically formulated for high mileage engines to minimize wear and restore lost performance.
  • Seal Compatibility: Excellent seal compatibility keeps seals and gaskets pliable, reducing oil leaks.
  • Extended Intervals: Allows for extended drain intervals, reducing the frequency of oil changes.
  • LSPI Protection: Provides increased protection against Low-Speed Pre-Ignition (LSPI).
  • Anti-Wear Additives: Fortified with robust Zinc/Phosphorus anti-wear additives for enhanced engine protection.
  • Oxidation Stability: Exceptional oxidation stability helps maintain oil integrity over time.
  • Deposit Reduction: Reduces engine deposits with stout detergents, promoting engine cleanliness and longevity.
  • Advanced Technology: Utilizes Royal Purple's proprietary Synerlec technology for superior film strength and friction reduction.
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Current price is $37.56
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  • Free 90-day returns
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Customer ratings & reviews

4.8 out of 5 stars
stars116 ratings44 reviews
How item rating is calculated
5.0
3.3
  1. 5 stars88% (102)
  2. 4 stars9% (10)
  3. 3 stars1% (1)
  4. 2 stars0% (0)
  5. 1 star3% (3)

Reviews summary

Pros

  • : Provides noticeable power increase.

Neutral

  • : Can deliver high mileage, but may drop off rapidly.
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Showing 1-3 of 44 reviews

Apr 20, 2026
Jeffery
5 out of 5 stars review

Verified Purchase

always thought royal purple was just a overpriced gimmick oil.put it in the wife's 03 Camry.engine is silent now.these cars are known for oil consumption.have went 1600 miles on this oil and still haven't had to add any more.im switching all my old vehicles now

Helpful?5DF3AY4A3CIB192183867
Oct 9, 2024
Maxine
5 out of 5 stars review

Verified Purchase

What You See Is What You Get

This item was returned because it did not arrive on time for my oil change. But still purchased the oil, at the of my appointment. And was assured that the product was as good for my car as ordered on line. Could not show pictures because the item has been taken back to store.

Incentivized Review
Helpful?5DF3AY4A3CIB192183867
Apr 17, 2026
kian
Top Reviewer
5 out of 5 stars review

Verified Purchase

Royal Purple high mileage! highly recommend this

I really don't mind sharing our opinions on products we buy , just want people to know weather the items or products to worth buying.

Helpful?5DF3AY4A3CIB192183867