We have two 172's with H2AD's. As far as we can tell, unless this information has changed in the last two years, cam guard is never mentioned. What is mentioned is an oil with the Lycoming LW-16702 additive of the aviation oils available in North America such as :Aeroshell W100 plus, W80 Plus, W 15w50, Phillips Victory 100 AW, Exxon Elite 20w50. Or a bottle of the LW-16702 Additive added to a random Aviation oil not mentioned above. The oil has to be changed out after 50 hours or another bottle of LW-16702 put in. If you use more than two qts of add oil during the oci of a different brand than what the oci started with, then another bottle of LW-16702 has to be added, or another oil change performed with oil containing the LW-16702 additive or the random other oil with LW-16702.
Now before I worked there, pilots were using random oils for make up oil, not containing the LW-16702 requirement and they sustained engine failures in both aircraft, before the current "controller" engines.
Cam Guard seems pretty Legit (over the competing brand that's made from a 10 weight conventional mineral mixed with starting fluid.) I've used cam guard in our H2AD's a few times with W 100 Plus when performing oci's. I hope to God, Cam Guard is not sone auto rx variant.
Now before I worked there, pilots were using random oils for make up oil, not containing the LW-16702 requirement and they sustained engine failures in both aircraft, before the current "controller" engines.
Cam Guard seems pretty Legit (over the competing brand that's made from a 10 weight conventional mineral mixed with starting fluid.) I've used cam guard in our H2AD's a few times with W 100 Plus when performing oci's. I hope to God, Cam Guard is not sone auto rx variant.