Motor Doctor STOP SMOKE Additive

Marsoni

M251S

$31.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Motor Doctor STOP SMOKE AdditiveModern multifunctional additive in engine oil a viscosity stabilizer designed to restore oil pressure and reduce its consumption in engines with high mileage. Product properties include a special modifier that increases the oil viscosity index, anti wear components that minimize wear on engines, and improved stability and strength of the oil film on the rubbing parts of the engine. This product is suitable for petrol and diesel engines and all types

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Fast: 2-3 business days
Express: 1-2 business days

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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Used it in a pinch for stater relay... it works great. Be aware... Mine required metric sockets for the nuts... 10mm for large terminals - 3/8 was too tight and same for smaller terminals 7mm fit better than 5/16 that was too loose. The mounting holes are also spaced closer together than the OEM on a mercruiser 260 in a mid 1980's boat but easy to remedy with a 1/4" drill bit.

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Reviewed in the United States on August 4, 2023

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Don

Waukegan, US

★★★★★ 5

Fixed 4.3 Merc IO

Size: 96158T-1PCS

Engine wouldn't start reliably or consistently. I had no clicking either from the old solenoid even though it would start from time to time...motor starts perfect after install. Pretty easy install as long as you reconnect the right wires. This worked perfect!

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Reviewed in the United States on August 8, 2023

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Mr Sexy

Charlottesville, US

★★★★★ 5

Quality

Size: 96158T-2PCS

Worth the money. Quality. Fit good. Easy too install.

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Reviewed in the United States on September 21, 2025

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