Do i add it to warm engine or cold?

Hot. Remove a main hose, drain some coolant, add it direct into the main hose and replace. Run engine.

is this additive ok for diesel engines? thanks.

For the oil seal that is in my diesel engine, a 1700 cc diesel engine a VW Transporter van circa 1989 I did have to buy & use 2 full containers of StopLeak to get desired effect.. On my engine 'tis the main crankshaft oil seal that plays & as this is situated between the back of the flywheel assembly & via the clutch the gearbox it's not an easy item to replace . If your customer's oil leak is not major or in a difficult to get at place, I'd say yes give it a try.yours sincerely/ Brian Cokayne/ Stockport

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Silverhook Engine Stop Leak 325ml

Product ID: 50704899

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⛽Cuts oil consumption

🔧Restores rubber seals

🛢️325ml precision formula

Description

🛠️ Stop leaks, save oil, and drive worry-free with SILVERHOOK!

OIL SAVER - Significantly reduces oil consumption, saving you money and hassle.
COMPACT POWER - 325ml bottle designed for easy application and long-lasting results.
LEAK LOCKDOWN - Effectively stops external oil leaks to keep your engine clean and efficient.
SEAL THE DEAL - Replenishes and revitalizes rubber seals for a leak-proof engine.
CONDITIONED TO PERFORM - Contains advanced seal conditioners that extend engine life and reliability.

SILVERHOOK Engine Stop Leak 325ml is a high-performance additive designed to restore rubber seals, reduce oil consumption, and stop external oil leaks. Its advanced seal conditioners ensure enhanced engine reliability and longevity, packaged in a convenient 325ml bottle for easy use.

Specifications

Manufacturer	Silverhook ltd
Brand	SILVERHOOK
Model	SGA09
Package Dimensions	22.4 x 8.4 x 4.4 cm; 280 g
Item model number	SGA09
Manufacturer part number	SGA09
Item Weight	280 g

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