PG55 NR358 | Free Shipping from two bottles

PG55 NR358: Advanced Coolant for Cast Iron and Diesel Engines

Save up to $75 on bulk orders of 6 bottles — Free Shipping from 2 bottles
Perfect for heavy-duty and classic engines. No hidden fees.

Antifreeze Type: Golden Ratio Prediluted (55:45)

Durable Cooling for Heavy-Duty Applications

PG55 NR358 is engineered for cast iron and diesel engines, delivering unmatched heat control, corrosion resistance, and long-lasting performance. Built on the golden 55:45 formula, PG55 NR358 combines:

• 55% propylene glycol
• 40% high-precision filtered water
• 5% rust inhibitors, anti-foaming agents, and additives

See the Kemitec top page to learn more about the Golden Ratio and why it matters

Why Choose PG55 NR358?

• Specialized for Cast Iron and Diesel Engines – Designed for cast iron blocks and high-compression diesel systems
• Superior Corrosion Resistance – 5% additive blend prevents rust and scaling in radiators and cooling channels
• Optimized for Extreme Conditions – Maintains thermal stability during high-load operation and severe weather
• Fuel Efficiency Through Stability – Keeps combustion consistent for better fuel economy
• Eco-Friendly – Non-toxic, biodegradable propylene glycol for safer use

Applications

• Heavy-Duty Trucks and Overland Vehicles – Built for engines under continuous load
• Diesel Engines – Ideal for high-compression performance and reliability
• Japanese Icons – RB26 (GT-R), 2JZ (Supra/Aristo), 3S-GE(T), 4G63
• American Legends – 428 Cobra Jet (Mustang), 426 HEMI (Challenger)
• Industrial Use – Compatible with generators, farm machinery, and cast iron equipment

Technical Specifications

• Engine Compatibility – Diesel and cast iron engines; suitable for gasoline engines
• Composition:
  • Propylene glycol: 55%
  • Filtered water: 40%
  • Additives: 5%
• Boiling Point: 224.6°F (107°C)
• Antifreeze Protection: Down to -40°F (-40°C)
• Replacement Interval: Every 2 years (heavy-duty), up to 5 years (standard use)
• Volume: 4 liters (1.056 gallons)
• Color: Blue
• Ready-to-Use: Do not dilute or mix with other coolants

How Much Do You Need?

• Diesel & Heavy-Duty Vehicles (RAM 2500, Ford F-250): 15–25 liters → 4–6 bottles
• Classic Cast Iron Engines (RB26, 2JZ, 428 Cobra Jet): 10–15 liters → 3–4 bottles

Pricing at a Glance

• 1 Bottle: $104.99
• 2 Bottles: $92.49 each ($184.98 total)
• 4 Bottles: $92.49 each ($369.96 total)
• 6 Bottles: $92.49 each ($554.94 total)

Special Offer

• Save up to $75 on orders of 6 bottles
• Free shipping from 2 bottles — no hidden fees

Click here to download the SDS (Safety Data Sheet)