10 Best zddp oil additives of 2026

Explore top picks

Best Choice

1

Rislone

Rislone 4405-6PK Hy-per Lube Zinc ZDDP Supplement, 11 oz, 6-Pack | Real ZDDP Zinc Additive
9.8

Exceptional

Our Rating
How do we rank?

Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you

Careful review Our team ensures quality, value, and fit based on real user feedback

Trusted insights AI and human analysis guide your decisions, reflecting real user priorities
Real users impact

Thousands of users trust our site daily

Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
Value for Money

2

ZDDPlus
ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles
Main highlights

Key Features and Benefits
Enhances older engines with zinc for protection, easy to use with any oil change, prevents metal on metal contact.

Ideal Use Cases
Best for pre-1989 and high-performance engines, compatible with both synthetic and conventional motor oils.

Customer Reviews Highlight
Most praised for significantly reducing engine wear and tear, leading to smoother performance and longer engine life.
Key specs
- performance:High performance engines
- friction reduction:Prevents metal contact
- engine protection:Added zinc for protection
- compatibility:Synthetic and conventional oils
- wear reduction:Prevents metal contact
9.7

Exceptional

Our Rating

9.5
worth the money

9.5
distance
3

Rislone
Rislone 4405 Hy-per Lube Zinc ZDDP Supplement, 11 oz. | Real ZDDP Zinc Additive
Main highlights

Zinc Additive for Engine Protection
Prevents camshaft wear and reduces piston scuffing, increasing engine life.

Ideal for Older Engines
Makes newer oils work in older engines without catalytic converters.

Noise Reduction
Significant reduction in idle engine noise, smoothing engine performance.
Key specs
- performance:Increases Engine Life
- friction reduction:Reduces Piston Scuffing
- engine protection:Prevents Camshaft Wear
- compatibility:Makes Newer Oils Work
- wear reduction:Prevents Camshaft Wear
9.6

Exceptional

Our Rating

9.9
Long life

9.7
worth the money

9.7
distance
4

REV X
REV-X Zinc ZDDP Oil Additive - 2 fl. oz.
Main highlights

Anti-Wear Protection
Creates a protective layer to prevent metal-to-metal contact.

Ideal for Flat Tappet Engines
Mandatory use for flat tappet engines, especially during break-in.

Praised Engine Protection
Highly praised for enhancing engine longevity and performance.
9.3

Excellent

Our Rating

9.9
worth the money

9.7
distance
5

REV X
REV-X Zinc ZDDP Oil Additive - 2 fl. oz. (5 Pack)
Main highlights

Prevents Metal-to-Metal Contact
Creates an anti-wear layer at friction points to prevent metal-to-metal contact and eliminate wear. Protects high-load components from excessive wear and failures.

Ideal for Flat Tappet Engines
Mandatory for all flat tappet engines. Engine break-in where the new camshaft and lifters need extra protection, and ZDDP is perfect for that.

Highly Praised for Older Vehicles
If you have an older vehicle, you need to add zinc to your oil. Newer oil blends do not contain the zinc additive.
9.1

Excellent

Our Rating

9.9
For teething

9.7
lasts a long time

9.5
worth the money
See Today’s Deals & Prices
6

Lucas Oil
Lucas Oil 10063 Engine Break In Oil Additive w/ TB Zinc Plus - 16 Ounce
Main highlights

Extreme Pressure Additives Benefit
Exclusive blend ensures faster break-in and reduced wear.

Ideal for Flat Tappet Engines
Perfect for new motors and flat tappet camshafts.

Praise for Camshaft Protection
Highly rated for keeping camshafts in top condition.
Key specs
- package dimensions:7.72 x 2.25 x 0.96 inches
- oem part number:10063
- liquid volume:16 Ounce
- flash point:N/A
- container type:N/A
9.0

Excellent

Our Rating

9.9
distance

9.7
worth the money

9.5
materials Quality
7

REV X
REV-X Zinc ZDDP Oil Additive - 2 fl. oz. (3 Pack)
Main highlights

Concentrated Zinc Protection
Offers 3000-3200 ppm ZDDP for superior engine protection.

Perfect for Classic Cars
Ideal for older, flat tappet engines using conventional oil.

Highly Praised for Engine Safety
Customers appreciate the added protection for performance engines.
8.7

Very Good

Our Rating
8

REV X
REV-X Zinc ZDDP Oil Additive - 2 fl. oz. (2 Pack)
Main highlights

Key Features
Ultra-concentrated ZINC ZDDP Additive, ensuring 3000-3200 ppm protection. Ideal for engine break-in, safeguarding camshafts and roller lifter bearings.

Ideal Use Cases
Perfect for vehicles undergoing engine break-in, especially those with flat tappet camshafts or requiring enhanced metal to metal protection.

Customer Praise
Most reviews highlight its effectiveness in reducing wear during break-in, with many noting significant improvements in engine performance and longevity.
8.5

Good

Our Rating

9.9
worth the money

9.5
distance
9

Eastwood
Eastwood ZDDP Oil Additive for Pre 1989 Car Engines | 4 oz Bottle | 1 Pack
Main highlights

Prevents Premature Wear
ZDDP additive prevents metal-on-metal contact, reducing wear.

Ideal for Classic Engines
Best for older vehicles with non-roller lifters and flat tappet cams.

User Recommended
Praised for effectiveness in classic cars and motorcycles.
Key specs
- performance:Prevents premature lifter deterioration
- friction reduction:Prevents metal-on-metal contact
- engine protection:Reduces scuffing under load
- compatibility:N/A
- wear reduction:Alters surface characteristics
8.2

Good

Our Rating
10

Liqui Moly
Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 2009
Main highlights

High Load-Bearing Film
Forms a durable lubricant layer on all friction surfaces.

Ideal for High Mileage Engines
Perfect for engines needing smoother operation at high RPMs.

Noise Reduction Praised
Customers highlight significant reduction in engine noise and vibration.
Key specs
- performance:Improves engine sound
- friction reduction:High load-bearing film
- engine protection:Anti-friction
- compatibility:Universal fit
- wear reduction:N/A
8.1

Good

Our Rating

9.7
worth the money

9.1
Long life

9.1
distance

10 Best zddp oil additives of 2026

1

Rislone 4405-6PK Hy-per Lube Zinc ZDDP Supplement, 11 oz, 6-Pack | Real ZDDP Zinc Additive

How do we rank?

How do we rank?

Analyzing top stores

2

ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles

9.5

9.5

3

Rislone 4405 Hy-per Lube Zinc ZDDP Supplement, 11 oz. | Real ZDDP Zinc Additive

9.9

9.7

9.7

4

REV-X Zinc ZDDP Oil Additive - 2 fl. oz.

9.9

9.7

5

REV-X Zinc ZDDP Oil Additive - 2 fl. oz. (5 Pack)

9.9

9.7

9.5

6

Lucas Oil 10063 Engine Break In Oil Additive w/ TB Zinc Plus - 16 Ounce

9.9

9.7

9.5

7

REV-X Zinc ZDDP Oil Additive - 2 fl. oz. (3 Pack)

8

REV-X Zinc ZDDP Oil Additive - 2 fl. oz. (2 Pack)

9.9

9.5

9

Eastwood ZDDP Oil Additive for Pre 1989 Car Engines | 4 oz Bottle | 1 Pack

10

Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 2009

9.7

9.1

9.1

Sign up and get exclusive special deals