10 Best zddp oil additives of 2026

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1

Rislone

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

25% Off
9.8

Exceptional

Our Rating
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Value for Money

2

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.
9.6

Exceptional

Our Rating

9.9
For teething

9.7
lasts a long time

9.5
worth the money
3

Rislone
Bar's Leaks Rislone 4405 Engine Oil Supplement Concentrate with Zinc Treatment - 11 oz, Yellow
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
9.4

Excellent

Our Rating

9.9
Long life

9.7
worth the money

9.7
distance
4

Rislone
Bar's Leaks Rislone 4405 Engine Oil Supplement Concentrate with Zinc Treatment - 11 oz, Yellow
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
9.2

Excellent

Our Rating

9.9
Long life

9.7
worth the money

9.7
distance
5

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.
8.9

Very Good

Our Rating

9.9
worth the money

9.7
distance
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6

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.
8.6

Very Good

Our Rating

9.9
worth the money

9.7
distance
7

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.
8.4

Good

Our Rating

9.9
For teething

9.7
lasts a long time

9.5
worth the money
8

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
8.3

Good

Our Rating

9.9
distance

9.7
worth the money

9.5
materials Quality
9

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
8.2

Good

Our Rating

9.9
distance

9.7
worth the money

9.5
materials Quality
10

Eastwood

Eastwood ZDDP Oil Additive for Pre 1989 Car Engines | 4 oz Bottle | 2 Pack
8.0

Good

Our Rating

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

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

9.9

9.7

9.5

3

Bar's Leaks Rislone 4405 Engine Oil Supplement Concentrate with Zinc Treatment - 11 oz, Yellow

9.9

9.7

9.7

4

Bar's Leaks Rislone 4405 Engine Oil Supplement Concentrate with Zinc Treatment - 11 oz, Yellow

9.9

9.7

9.7

5

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

9.9

9.7

6

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

9.9

9.7

7

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

9.9

9.7

9.5

8

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

9.9

9.7

9.5

9

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

9.9

9.7

9.5

10

Eastwood ZDDP Oil Additive for Pre 1989 Car Engines | 4 oz Bottle | 2 Pack

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