Product Description
Deuthlon Cast Lube – Ultralight Bearing Oil
Part Number: Cast Lube
Manufacturer: Deuthlon
Alternate Part Number: DEU CASTLUBE (Mike's Reel Repair)
Product Overview
Deuthlon Cast Lube is a revolutionary ultra-low viscosity bearing oil engineered specifically for high-performance fishing reels. Designed to solve the "speed vs. protection" dilemma, this formula offers the free-spinning speed of a dry bearing with the corrosion protection of a heavy oil.
It is the premier choice for Bait Finesse System (BFS) anglers, distance casters, and tournament pros who demand maximum spool acceleration. Infused with Dust-Shield™ technology, Cast Lube creates a polarized molecular bond that actively repels dust, salt, and grime, ensuring your ceramic or high-speed steel bearings remain clean and fast even in harsh saltwater environments.
Key Features & Benefits
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Ultra-Light Viscosity: Minimizes fluid drag on spool bearings, allowing for longer casts, easier pitching, and reduced backlash when casting light lures.
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Dust-Shield™ Technology: A proprietary formulation that disperses moisture and repels dirt, sand, and dust to prevent the "gritty" feel that slows down bearings.
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PTFE Enhanced: Contains Polytetrafluoroethylene (Teflon) to reduce friction coefficients to near-zero, smoothing out vibration and noise.
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Rust Solvent & Inhibitor: Not only prevents new corrosion but can actively dissolve existing rust on seized bearings, potentially saving damaged components.
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Hydrophobic Action: Disperses water immediately upon contact, protecting internal steel balls from saltwater intrusion.
Technical Specifications
| Feature | Specification |
| Viscosity Grade | Ultra-Low / Ultralight |
| Bearing Compatibility | Ceramic & High-Speed Stainless Steel |
| Technology | Dust-Shield™, Polarized PTFE |
| Temperature Range | All-Weather (Freeze/Heat Resistant) |
| Primary Function | Maximum Casting Distance & Spool Speed |
Models & Applications
This is a Universal Fit performance upgrade compatible with all major reel manufacturers, including Shimano, Daiwa, Abu Garcia, Lew's, Penn, and 13 Fishing.
Ideal Application Points:
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Spool Bearings: The primary application. Apply to the bearings supporting the spool shaft for maximum casting distance.
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Bait Finesse (BFS) Reels: Critical for casting ultralight lures (1g - 5g) where spool startup inertia must be minimized.
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Ceramic Hybrid Bearings: The formula is safe for and enhances the performance of ceramic ball bearings.
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High-Speed Spinning Reels: Can be used on the main shaft for an ultra-light retrieve feel (note: may require more frequent re-application than medium viscosity oils).
Installation & Maintenance Notes
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Flush Old Oil: For the "Spinner Effect" (maximum speed), strictly clean/flush existing grease or old oil from the bearing using a solvent before applying Cast Lube. Mixing with heavy oil will reduce performance.
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Micro-Dosing: Only one drop is needed per bearing. Over-oiling can attract excess debris and create fluid drag.
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Emergency Repair: If a bearing is seized with rust while on the water, apply Cast Lube and spin manually; the rust solvent properties can often free the bearing for the remainder of the trip.
View Reel Schematics:
To locate the specific spool bearings in your reel, consult the PDF schematics available at www.reelschematic.com.
Alternate Part Numbers:
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Mike's Reel Repair: DEU CASTLUBE
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Manufacturer SKU: Cast Lube / CastLube

