STP Engine Oil Stop Leak – 300ml (63300EN)

Description

Genuine STP · Part no. 63300EN

STP Engine Oil Stop Leak is a 300ml treatment that conditions an engine's seals and gaskets to help stop minor oil leaks from the sump and rocker cover gaskets, timing gear covers and the front and rear main bearing seals. It suits petrol and diesel engines on regular or synthetic oil and contains no solids to clog the filter.

Good to know

• Why does the rear main seal matter? Replacing it means taking the gearbox off, a big labour job, so trying a stop leak first on a minor drip there makes sense.
• Is it safe for my catalytic converter? STP says it won't harm oxygen sensors or catalytic converters, and with no solids in it the oil filter and oilways stay clear.
• How soon should the leak slow? Seals need time to soften, so judge it after a good few drives; a leak that keeps leaving puddles needs the part replaced.

Which one?

For bulk use across several vehicles, the Lucas Oil Engine Oil Stop Leak 3.79 Litre (40279A); the Wynns Engine Oil Stop Leak – 325ml (77441) also names low SAPS oils and turbo engines.

Key features

• Helps stop minor oil leaks
• For main bearing, timing cover, sump and rocker cover seals
• Petrol and diesel engines
• Regular and synthetic oils
• No solids to clog filters
• Won't harm oxygen sensors or catalysts

Specification