Yes, Royal Purple motor oils contain zinc — specifically in the form of ZDDP (Zinc Dialkyldithiophosphate), an anti-wear additive commonly used in engine oils. Zinc helps reduce metal-to-metal wear, especially in high-performance and older flat-tappet engines.
Why Zinc Matters in Motor Oil
Zinc (ZDDP) is essential for:
- Protecting camshafts, lifters, and rockers
- Reducing wear in high-friction, high-heat areas
- Providing extra protection during cold starts and under extreme loads
Zinc is especially important for:
- Classic cars
- Muscle cars with flat-tappet cams
- Performance engines
- Racing applications
Does All Royal Purple Oil Have Zinc?
Yes — but the amount of zinc varies depending on the product line:
Royal Purple HPS (High-Performance Street):
- High levels of ZDDP
- Ideal for older engines and modified street cars
- Not API-licensed (because of the high zinc content)
Royal Purple XPR (Extreme Performance Racing):
- Very high zinc levels for racing and extreme use
- Designed for track-only or competition vehicles
Royal Purple API-Licensed Oils (e.g., SAE 5W-30, 10W-30):
- Lower ZDDP levels, within modern API standards
- Safe for catalytic converters and compatible with newer vehicles
If you need extra zinc, choose HPS or XPR series — not standard API-licensed oils.
Should You Use Royal Purple for Zinc Protection?
Yes, especially if you:
- Own a classic or vintage car
- Run a flat-tappet camshaft
- Want added engine longevity under high stress
- Prefer a premium oil with synthetic performance and additives
Final Thoughts
So, does Royal Purple have zinc? Absolutely. Their HPS and XPR lines offer elevated ZDDP levels ideal for high-performance and older engines. Standard Royal Purple oils also contain zinc but in lower concentrations to meet emission system requirements. Always choose the right oil based on your vehicle’s age, usage, and engine type. For more oil tips and engine care info, visit ssrmovies.ltd.
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