Can this be mixed with tap water or is distilled water necessary?

De ionised water is the best bet. Tap water especially hard has minerals that after a while can clog your radiator

can you mix the speed flush in the system with new coolant for long period

This item is for flushing the system, not for mixing like radweld

Is it possible to flush out 100% of liquid? if not is it ok to have a small amount of holts cleaner left in the cooling system? thanks!

Hi, how much you get out is dependant on the cooling system design, but you can just keep running water through until it's clear. A small amount left shouldn't affect the new coolant.

How good is this removing oil from the coolant ?

It’s a waste of money does not work

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Holts Speedflush Coolant Flush, Universal Car Radiator Flush, High Performance Coolant Flush For Radiators & Cooling System, Quick & Easy To Use, Prevents Overheating, Suitable For All Cars, 250ml

Product ID: 49434147

⏱️Quick 1-hour flush cycle

♻️Universal fit for all engines

🛡️Prevents costly overheating

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

Rp477459

Duties & taxes included

In stock

Sold byAmazon IndonesiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Indonesia.

Secure transaction

Description

🛠️ Keep your engine cool, your ride smooth, and your wallet happy!

OVERHEAT DEFENSE - Protects your engine from overheating, extending vehicle lifespan
COST EFFECTIVE CARE - Avoid expensive mechanic flushes with this DIY powerhouse
EFFORTLESS APPLICATION - Pour in, run, and flush—maintenance made simple for busy pros
RAPID RADIATOR RENEWAL - Flushes out scale & debris in just one hour for peak cooling efficiency
UNIVERSAL COMPATIBILITY - Works seamlessly with all car engines—no guesswork, just performance

Holts Speedflush Coolant Flush is a high-performance radiator cleaner designed to quickly remove harmful scale and deposits from any car’s cooling system. Its universal formula prevents overheating, extends engine life, and simplifies maintenance with a quick, easy pour-in-and-flush process. Trusted by thousands with a 4.6-star rating, it’s the smart choice for proactive vehicle care.

Specifications

ASIN	B004PZPTAW
Best Sellers Rank	811 in Automotive ( See Top 100 in Automotive ) 282 in Car & Motorbike Care
Brand	Holts
Customer Reviews	4.6 4.6 out of 5 stars (1,324)
Date First Available	28 Feb. 2011
Item Weight	350 g
Item model number	RK1R
Manufacturer	HOLTS
Manufacturer part number	RK1R
Model	LOYRK1R
Product Dimensions	4.2 x 7.8 x 14.6 cm; 350 g

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.