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10 Best Zddp Additive of December 2025
List of Top Rated Zddp Additive from thousands of customer reviews & feedback.
Updated On Dec 2025
2,381 Reviews Studied
1
Rislone 4405 Engine Oil Supplement Concentrate with Zinc Treatment - 11 oz. Read Review
- Prevents camshaft wear
- Reduces piston scuffing
- Increases engine life
- Makes newer oils work in older engines
2
ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 5 Bottle Pkg Read Review
- PROTECT YOUR ENGINE - Older cars with flat tapped lifters-cam need the added zinc for protection
- EASY TO USE - Simply empty entire 4oz contents of the bottle to a 4 to 6 quart oil change.
- PREVENT METAL ON METAL CONTACT - ZDDPlus alters characteristics to prevent metal on metal contact
- FOR USE ON PRE 1989 AND HIGH PERFORMANCE ENGINES
- COMPATIBLE WITH SYNTHETIC AND CONVENTIONAL MOTOR OILS
3
Hy-per Lube by Rislone ZDDP Supplement (4405-6PK) Read Review
- Prevents camshaft wear
- Reduces piston scuffing
- Increases engine life
- Makes newer oils work in older engines
4
ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 6 Bottle Pkg Read Review
- Prevents premature cam and valve train failure
- Extreme pressure protection
- For use on pre-1989 engines
- Use in high-performance and classic cars
5
REV X ZDDP Oil Additive - Zinc & Phosphorus for Your Engine (2) Read Review
- 1 Bottle Treats 6 qts. of oil - The most concentrated form of ZINC (ZDDP) Additive available. 3000-3200 parts per million when blended with 6 quarts of oil.
- Provides Maximum Protection For Engine Break In.
- Protects Flat Tappet Camshafts (Hydraulic or Solid).
- Provides increased lubrication of Roller Lifter Bearings (Hydraulic or Solid).
- Provides Maximum Metal To Metal Protection.
6
ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 10 Bottle Pkg Read Review
- Prevents premature cam and valve train failure
- Extreme pressure protection
- For use on pre-1989 engines
- Use in high-performance and classic cars
7
REV X ZDDP Oil Additive - Zinc & Phosphorus (1) Read Review
- Treats 6 Quarts - The most concentrated form of ZINC (ZDDP) Additive available. 3000-3200 parts per million when blended with 6 quarts of oil.
- Provides Maximum Protection For Engine Break In.
- Protects Flat Tappet Camshafts (Hydraulic or Solid).
- Provides increased lubrication of Roller Lifter Bearings (Hydraulic or Solid).
- Provides Maximum Metal To Metal Protection.
8
REV X ZDDP Oil Additive - Zinc & Phosphorus (5) Read Review
- 1 Bottle Treats 6 qts. of oil - The most concentrated form of ZINC (ZDDP) Additive available. 3000-3200 parts per million when blended with 6 quarts of oil.
- Provides Maximum Protection For Engine Break In.
- Protects Flat Tappet Camshafts (Hydraulic or Solid).
- Provides increased lubrication of Roller Lifter Bearings (Hydraulic or Solid).
- Provides Maximum Metal To Metal Protection.
9
ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles Read Review
- PROTECT YOUR ENGINE - Older cars with flat tapped lifters-cam need the added zinc for protection
- EASY TO USE - Simply empty entire 4oz contents of the bottle to a 4 to 6 quart oil change.
- PREVENT METAL ON METAL CONTACT - ZDDPlus alters characteristics to prevent metal on metal contact
- FOR USE ON PRE 1989 AND HIGH PERFORMANCE ENGINES
- COMPATIBLE WITH SYNTHETIC AND CONVENTIONAL MOTOR OILS
10
ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 3 Bottle Pkg Read Review
- Prevents premature cam and valve train failure
- Extreme pressure protection
- For use on pre-1989 engines
- Use in high-performance and classic cars
