I have a 1972 gmc with 350 sbc. Small leak at the intake. Will this be good for this motor?.

I would recommend Marvel Classic Motor Oil. It is a 10W 40 and contains the correct oil additives for the 1972 truck. Marvel oil products will not seal a gasket leak.

Marvel Motor Oil does not meet API specs due to the high zinc content. The additive package would meet SN+ specs. The zinc/phosphorus content is 1200 ppm (parts per million), API current specs are 800 ppm max.

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Marvel Mystery Oil 50918 Classic Vintage Car Motor Oil - 32 Fl Oz. (Pack of 6)

Marvel Mystery Oil 50918 Classic Vintage Car Motor Oil - 32 Fl Oz. (Pack of 6)

Product ID: 66906944

Details

Viscosity
10w-40
Brand
Marvel Mystery
Vehicle Service Type
Car
Global Trade Identification Number
Manufacturer
Marvel Mystery

⚙️High zinc anti-wear formula

🛡️Superior shear stability

🛢️10W-40 viscosity classic fit

Description

🛠️ Keep your classic ride running like a legend—because vintage deserves VIP treatment!

SEAL CONDITIONER POWER - Rejuvenates seals to prevent leaks, ensuring your engine stays leak-free and reliable.
API EXCELLENCE GUARANTEED - Exceeds all API standards for anti-wear, anti-corrosion, and sludge prevention—trusted by classic car enthusiasts.
UNMATCHED SHEAR STABILITY - Maintains viscosity under stress, delivering consistent lubrication and engine protection.
ADVANCED ADDITIVE TECHNOLOGY - Boosted additives combat sludge, rust, and condensation during storage, keeping your classic car pristine.
ENGINEERED FOR TIMELESS PERFORMANCE - Specifically formulated with elevated zinc levels to protect vintage engines from wear and tear.

Marvel Mystery Oil 50918 Classic Vintage Car Motor Oil is a premium 10W-40 lubricant designed specifically for classic car engines. Featuring high zinc content and advanced additives, it prevents wear, sludge, rust, and leaks while maintaining superior shear stability. This 32 fl oz pack of 6 meets and exceeds all API specifications, making it the ultimate choice for preserving and enhancing the performance of vintage vehicles.

Specifications

ASIN	B07DBXNMMX
Brand	Marvel Mystery Oil
Brand Name	Marvel Mystery Oil
Compatible with Vehicle Type	Car
Container Type	Can
Customer Reviews	4.3 out of 5 stars 11 Reviews
Global Trade Identification Number	20077874509186
Included Components	6 - Marvel Classic Vintage Car Motor Oil 32 oz
Item Type Name	Marvel Classic Vintage Car Motor Oil
Item Weight	2.1 Pounds
Liquid Volume	32 Fluid Ounces
Manufacturer	Marvel Mystery Oil
Manufacturer Part Number	50918
Manufacturer Warranty Description	Manufacturer’s warranty can be requested from customer service.
Model Number	50918
Package Information	Can
SAE J300 Viscosity Grade	10W-40
Size	Classic Vintage Car Motor Oil (6-Pack)
Unit Count	192.0 Fluid Ounces
Vehicle Service Type	Car
Viscosity	10w-40

Reviews

T**.

19.08.2019

W**N

6.08.2021

J**N

6.07.2019

M**S

9.09.2018

D**T

21.09.2019

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