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5 Quarts Lucas Oil 10631 SAE 30 High Zinc Engine Break-In Oils; Requires no moly supplement and no additional additives & Compatible with methanol and high octane race fuel

4.9 out of 5 stars 129 ratings

Price: $31.60 & FREE Shipping
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  • Quicker more efficient ring seal
  • Higher levels of zinc and phosphorus maximum protection
  • A must use for flat tappet camshaft break-in
  • Less blow-by equates more power and better ring seal
  • Requires no moly supplement and no additional additives
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Frequently bought together

  • 5 Quarts Lucas Oil 10631 SAE 30 High Zinc Engine Break-In Oils; Requires no moly supplement and no additional additives & Compatible with methanol and high octane race fuel
  • +
  • Lucas Oil 10630 30W Petroleum Break-In Oil - 1 Quart Bottle
  • +
  • Permatex 81950 Ultra Slick Engine Assembly Lube, 4 oz., 4 Ounce
Total price: $54.61
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5 Quarts Lucas Oil 10631 SAE 30 High Zinc Engine Break-In Oils; Requires no moly supplement and no additional additives & Compatible with methanol and high octane race fuel
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Customer Rating 4.9 out of 5 stars (129) 4.9 out of 5 stars (21) 4.6 out of 5 stars (22) 4.9 out of 5 stars (56) 4.6 out of 5 stars (98) 4.8 out of 5 stars (60)
Price $31.60 $15.61 $32.12 $43.18 $10.49 $62.51
Sold By Everything-Aftermarket Amazon.com Everything-Aftermarket Amazon.com Amazon.com Everything-Aftermarket
Liquid Volume 160.0 fluid_ounces 32.0 fluid_ounces 160.0 fluid_ounces 5 quarts 1 quarts 32.0 fluid_ounces
Size 5 Quarts 1 Quart (32 Ounces) 5 Quart 1 Quart (32 Ounces) 12 Quarts 10W-30
Viscosity 30W 20w-50 10W40 10w-30 10W30

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Product description

Lucas Racing Break-In Oils help seal new rings while providing excellent extreme pressure properties that protect the entire valve train and of course, the camshaft. Especially designed for flat tappet camshafts, but can be used wherever you need the extra wear protection in the form of zinc. Formulated in three grades to cover all motors and applications

Recommended for use on initial break-in of both flat tappet and roller camshaft applications for maximum protection and performance. Excellent on track performance prior to switching engine over to the racing only line conventional or synthetic. Compatible with Ethanol, Methanol and high octane race gas.

Zinc levels typically at 3600 PPMS, which is much higher than commercial passenger car oils. Recommended for use in racing applications only. Not recommended for passenger cars requiring API service oil.


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4.9 out of 5 stars
4.9 out of 5
129 customer ratings
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Reviewed in the United States on December 31, 2018
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Reviewed in the United States on June 11, 2019
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Reviewed in the United States on March 21, 2020
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Reviewed in the United States on November 16, 2019
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Reviewed in the United States on December 11, 2019
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Reviewed in the United States on March 4, 2020
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Reviewed in the United States on November 6, 2016
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Reviewed in the United States on April 22, 2020
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5.0 out of 5 stars Five Stars
Reviewed in Canada on February 16, 2018
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