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ASL CamGuard is a comprehensive additive package formulated to supplement specific functions in a wide variety of motor oils. It was designed to dramatically improve the performance of all mineral based , semi-synthetic and fully synthetic motor oils in the areas of corrosion protection, wear reduction, and seal protection.

Camguard is an advanced oil supplement designed to give regular engine oil what it needs to protect and lubricate any engine. Camguard is a synergistic blend of advanced oil additives from all over the world, designed to reduce wear, curb deposit formation and more importantly protect engines against rust and corrosion. It contains multiple corrosion inhibitors for both ferrous and non-ferrous metals. A combination of ashless anti-wear compounds, anti-oxidants designed to reduce carbon deposits and special seal conditioners to prevent oil weeping. Camguard is FAA accepted and approved for use in piston engine aircraft oils meeting SAE-1899 standards. Camguard is compatible with piston aircraft oils, passenger car motor oils, most marine oils, and heavy-duty diesel oils.


  • FAA accepted
  • Fights rust & corrosion
  • Vastly reduces engine deposits
  • Provides extreme pressure and anti-wear protection
  • Conditions engine seals for extended life


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Help extend the life of your engine with a product that has a cool name! Aircraft Spruce & Specialty Co. makes ordering easy with their great website.

Gary R
January 15, 2021

It’s what I wanted.

Dennis W
January 14, 2021

I always use CamGuard. Great product.

January 14, 2021

use this all the time.

Brian T
December 15, 2020

Great service from Spruce. Been using this in a C182S for years now, Highly recommended.

E. G
November 27, 2020

One of the best aviation oil additives there is around. I use it in my aircraft and recommend it highly to my customers. This especially true during the winter months when many of the aircraft sit idle in their hangars.

Dave D
November 26, 2020

Should be part of every oil change and any time oil is added between oil changes. Nothing is more important than keeping those moving parts well lubricated and protected.

September 30, 2020


Jim L
September 29, 2020

I’m based out of the Houston area with my hangar less than 12 miles from the Gulf Coast. Since I started using CamGuard Aviation Oil Additive I’ve seen significant reductions in wear components in my oil analysis. I’m convinced that CamGuard is helping to reduce corrosion and protect my engine. Gary VanDyke

Gary V
September 24, 2020

got what i ordered and it came fast

Joe C
July 29, 2020


Q: How much CamGuard do I use per oil change? I use AeroShell mineral. Thanks.

Per the manufacturer, one pint of CamGuard will serve 8-10 quart sump for the change.

Q: Is there a shelf life for Camguard aviation oil additive?

Per the supplier: The shelf life is indefinite.

Q: Is CamGuard safe to use in 15W-50 oil? I understand 15w50 has additives blended in and I dont want to add camguard if doing so would have adverse affects. Thank you

Per the supplier: Yes. CamGuard is perfectly safe to use with 15W-50 oil.

Q: I have a 12 quart sump, what is the correct amount of Camgaurd to use at oil change?

The correct ratio is 1.6 oz of Camguard per quart. So for 12 quarts, you would need 19.2 oz.

Q: Just had the annual done on my 1976 C182P. Oil change with 10 qts added out of 12 available in sump. Have only done two high speed taxis since the annual. Can I add Camguard at this time?

It is recommended to add Camguard during each oil change. You would add 1.6 ounces of Camguard Aviation with each quart of makeup oil between oil changes.

Q: Does CamGuard retard break-in or cause it to cease if used during new engine break-in period?

Camguard is made NOT to be used during the break-in period of a new engine.

Q: Can CamGuard be used with Aeroshell 15W-50 oil which already has additives?

Yes, this can be used with 15W-50.

Q: Can and should Camguard be used with PHILLIPS 66 X/C AVIATION OIL 20W50?

Yes, this is one of the preferred oils that Camguard recommends mixing this with.

Q: I just changed my oil (8 qtrs). Do I just add it on top of the new oil? Is it ok to add it even if the new oil has a couple of hours?

Per Camguard: You would need to discuss this with the engine manufacturer or your A&P for this information.

Q: Is it safe to use Camguard with Aeroshell W100PLUS?

Yes it is safe but it will not do any better with the camguard as the W100plus already has an additive IN it.

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