How many bottles does it take to flush a four cylinder system?

Based upon my experience, ONE bottle is more than enough.

Is it safe for aluminum radiators? Their website doesn't say.

I have used it in aluminum radiators a lot If the radiator is in bad shape it might leak This is a great product here

What are the disposal instructions on this product?

Just recycle ♻️ at recycling center

Can you use this for boats?

I don't own a "ship" but sure has hell my "boat" has a water to water heat ex-changer that gets strangled by salt and mineral deposits on the lake/sea side, that require a nice acid boil to clean out. The closed loop with coolant in it gets flushed every two years. I would not trust much of what you say about "boats".

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BlueDevil Radiator Flush – 32 oz | Deep Cleaning Coolant System Flush | Remov...

BlueDevil Radiator Flush – 32 oz | Deep Cleaning Coolant System Flush | Remov...

Product ID: 6344511

⏳Extends vehicle life with regular use

🔥Prevents overheating & costly repairs

⚙️Concentrated formula for deep cleaning

55155CFA

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Sold byAmazon Cote D' IvoireDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚗 Keep your engine cool, clean, and unstoppable!

TRUSTED CHOICE - Ranked #4 in Radiator Flushes with 4.5-star rating from over 500 users
DEEP CLEAN POWER - Concentrated formula flushes rust, scale & grime for peak cooling efficiency
OVERHEAT DEFENSE - Removes harmful deposits to prevent engine overheating and expensive breakdowns
LONGEVITY BOOSTER - Extends your vehicle’s lifespan by maintaining a pristine cooling system
PERFORMANCE RESTORER - Restores optimal coolant flow for improved engine performance and reliability

BlueDevil Radiator Flush is a powerful, concentrated coolant system cleaner that removes rust, scale, and grime to prevent overheating and costly repairs. Trusted by thousands, it extends vehicle life and restores optimal engine performance.

Specifications

ASIN	B00BJOT9A8
Best Sellers Rank	#45,082 in Automotive ( See Top 100 in Automotive ) #4 in Radiator Flushes
Brand	BlueDevil Products
Customer Reviews	4.5 4.5 out of 5 stars (529)
Date First Available	February 22, 2013
Item Weight	2.4 pounds
Item model number	00204
Manufacturer	BlueDevil Products
Manufacturer Part Number	00204
Model	00204
Product Dimensions	5 x 2 x 8.5 inches

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

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