Has anyone used this to stop your engine from smoking? if so did it help?

No I do not believe it will stop engine from smoking though if valve seals are worn and rings worn it may help I use it as it keeps lifter quiet!!

Does rislone high mileage formula engine treatment have zink zddp in it is it safe for catalyctic converters

It is safe for your catalytic converter but they have another product that has the Zinc which is the Rislone Hy-per Lube ZDDP Supplement

Is this safe to use at every oil change

I've used this as an additive ever since I hit 75,000 miles and I do the oil change every 3,500 miles there after.

How do you add it into crank case?

Thank you for your question, and for considering Rislone to help with your automotive needs. To add this product to your engine's crankcase, you would install it into the same opening where you would add engine oil. Do not overfill. If you have any other questions, or we can be of any further assistance, please call our Tech Support team at 1-800-345-6572. We are here to assist you Monday through Friday, from 8 am to 5 pm, Eastern time.

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Rislone Engine Treatment

Product ID: 4470341

Details

Brand
Rislone
Liquid Volume
500 ml
Package Information
Bottle
UPC
078615041022
Vehicle Service Type
Car Truck

🔥Reduces friction & wear

🔧Removes sludge & quiets noisy parts

🛢️Multi-grade formula for all temps

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Description

🚗 Elevate your engine’s game — because your ride deserves XTREME care!

SLUDGE BUSTING POWER - Effectively removes harmful deposits that degrade engine performance and longevity.
ULTIMATE ENGINE PROTECTION - Multi-grade formula ensures smooth oil flow and shields your engine across all temperatures.
MADE IN THE USA WARRANTY SAFE - Premium quality you can trust without risking your manufacturer’s warranty.
SILENCES NOISY LIFTERS VALVES - Penetrates deep to quiet annoying engine noises, delivering a whisper-quiet ride.
UNIVERSAL FIT FOR CARS TRUCKS - Compatible with virtually any vehicle, making it the go-to treatment for pros and enthusiasts alike.

Rislone 4102 XTREME LUBE® Maximum Performance Engine Treatment is a 16.9 oz. universal-fit additive designed to reduce friction, remove sludge, and quiet noisy lifters and valves. Its multi-grade formula protects engines across a broad temperature range, enhancing performance and longevity without voiding manufacturer warranties.

Specifications

ASIN	B0078661MK
Automotive Fit Type	Universal Fit
Best Sellers Rank	#5,907 in Automotive ( See Top 100 in Automotive ) #14 in Engine & Oil Fluid Additives
Brand Name	Rislone
Compatible with Vehicle Type	Car, Truck
Container Type	Bottle
Customer Reviews	4.6 4.6 out of 5 stars (1,994)
Global Trade Identification Number	00078615041022
Included Components	Engine Treatment
Item Type Name	Rislone High Mileage Engine Treatment
Liquid Volume	500 ml
Manufacturer	Rislone
Manufacturer Part Number	4102
Manufacturer Warranty Description	No
Model Number	4102
Number of Packs	1
Size	1 Pack
UPC	078615041022
Unit Count	1 Count

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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.

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