Does this work in an old classic 1950's car?

this worked great in all engines i have used it in -best additive i have used

If my truck hold 7 quarts of oil do I put in all 7quarts and on top of that then add 21 ounces of Lubegard?

The second answer is correct. Hold back 21 ounces of oil to compensate for adding 21 ounces of Lubeguard. The TOTAL fill will equal 7 quarts. I put 5 quarts of oil in, add the 21 ounces of Lubeguard, then add another 1 quart and 11 more ounces of oil. My truck always comes out right at the full level on the dipstick every time. It's bad to overfill your engine by 21 oz. , I've seen the problems caused by someone doing that.

Is this the same thing as the lubegard 40902 bio/tech engine oil protectant? just different packaging?

it comes up as a different part number but I'd be surprised if it's different, the heavy duty is cheaper, works well to save adding a quart between oil changes.

This additive is compatible with full synthetic oil.

yes, add 3 oz per qt of engine oil, at every oil change. for 5 qts you would put in 15 oz but subtract that amount from the 5 qts so you do not over fill.

30916 Heavy Duty Engine Protectant 32 Fl Oz

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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19441 Ft

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Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Drive smarter, not harder — protect your engine like a pro!

EXTEND OIL LIFE - Boost your engine oil’s lifespan by 30%, cutting down on costly changes.
OEM WARRANTY SAFE - Enhance performance without risking your manufacturer’s warranty.
FUEL ECONOMY UPGRADE - Reduce oil and fuel consumption to save money and the planet.
ADVANCED LXE TECHNOLOGY - Next-gen liquid wax ester formula keeps engines cooler and cleaner.
MAXIMIZE ENGINE EFFICIENCY - Slash friction by up to 29% for smoother, more powerful rides.

Lubegard Heavy Duty Engine Protectant uses cutting-edge LXE Technology to reduce engine friction by 29%, extend oil life by 30%, and improve fuel economy—all without voiding OEM warranties. Designed to supplement modern motor oils, it enhances anti-wear properties and keeps engines running cooler and cleaner for peak performance and longevity.

Specifications

ASIN	B006HI8H90
Best Sellers Rank	#78,579 in Automotive ( See Top 100 in Automotive ) #271 in Engine & Parts Fluid Cleaners
Brand	Lubegard
Customer Reviews	4.7 4.7 out of 5 stars (109)
Date First Available	December 3, 2011
Item Weight	0.01 ounces
Item model number	30916
Manufacturer	Lubegard
Manufacturer Part Number	30916
Product Dimensions	9.3 x 4.3 x 2.3 inches

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19441 Ft

Duties & taxes included

In stock

Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hungary.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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30916 Heavy Duty Engine Protectant, 32 fl. oz.

Description

Specifications

Common Questions