Classic-Spec High-Zinc (ZDDP) Oils & Stabilizers
Essential flat-tappet camshaft protection & ethanol fuel preservation
About This CS Guild Offering
Modern API-certified motor oils have stripped out zinc and phosphorus (ZDDP) to protect catalytic converters, causing premature camshaft lobe wipeout in vintage flat-tappet engines. Heritage Lubricants blends high-potency ZDDP and advanced anti-corrosion additives engineered specifically for carbureted and vintage powertrains.
Key Preservation & Engineering Features
- ✓Guaranteed 1,600+ PPM ZDDP concentration protects flat-tappet camshafts
- ✓Zero aggressive detergents that wash past loose-tolerance vintage piston rings
- ✓Stabilizes modern E10/E15 pump gas for up to 24 months in steel fuel tanks
- ✓GL-4 rated transmission lube safe for delicate bronze synchros in vintage gearboxes
- ✓Formulated with vapor-phase rust inhibitors for engines that sit idle between drives
📦 What's Included in the Box
- 1x 5-Quart Jug of Heritage High-Zinc Motor Oil (Choice of Viscosity)
- 1x 16oz Concentrated Ethanol Shield Fuel Treatment (Treats 80 gallons)
- 1x Oil Analysis Sample Bottle with Pre-paid Lab Testing Mailer
- Engine Break-In & Viscosity Selection Guide
🛡️ Suitable Vehicles & Eras
- Classic American V8s (Chevy Small/Big Block, Ford FE/Windsor, Mopar)
- Vintage British & European inline-4 and inline-6 engines
- Air-cooled flat-6 Porsche and VW engines
- Carbureted vehicles susceptible to fuel varnish and tank corrosion
Collector Specialty Care Advice
Always add ethanol fuel stabilizer before your final fill-up of the season, then run the engine for 10 minutes so treated fuel reaches the carburetor bowls.
CS Guild Member Pricing
✓ Free Continental US Shipping for CS Members
Instant order routing to Heritage Lubricants · 30-day money-back guarantee
Collector Specialty Verified Partner
Exclusive member rates guaranteed for policyholders and vault members.
Need help choosing the right package?
Our specialist team can answer questions about classic-spec high-zinc (zddp) oils & stabilizers.
Contact Guild Specialist