10063 Engine Break in Oil Additive w/TB Zinc Plus - 16 Ounce

This. Great product for engines with hydraulic or solid slipper lifters. Not needed for Roller cams. It was a good value price and delivered quickly. The delivery person did not follow directions and left it at the front door where there is lots of foot traffic. This usually only happens on Sunday delivery. I buy alot on Amazon and 90% deliver perfectly.

Great product it highly recommend it for the quality & the value it has the marks in all areas.

No issues.

lucas oil represents quality in the business. i use this for all my classic cars as a zinc additive.

Shud work cuz highly recommended my several YouTube mechanics including Scottie & Project Farm both guys highly rated !

I'm not cool enough to have the equipment to measure if it's working or not, but it came factory sealed and didn't leak in the box.

Pretty basic product, but due to Federal regulations, the zinc compound that used to protect your motor from wear has been removed. This is especially tragic for flat tappet (lifter) applications where controlled wear is essential to cam break in. This like other products puts the zinc back in, especially for break in. I would only use this full bottle in a new or rebuild situation. If you have a flat tappet motor, I would only use 1/4 to 1/3 of the bottle per oil change after the first break in oil change, assuming a 4-5 quart total capacity. Also, the label states not to use in cars newer than 1994 due to potential damage to the catalytic converter(s). But there are no applications I can think of after 1994 with flat tappets, but dont quote me on that.

Got an older engine with mechanical pushrod-operated valves, tappets and so forth? Modern motor oils with the newest API SN, SM or SL ratings may not have quite enough of those good old zinc anti-wear additives to keep those cam followers and other "wackity bits" happy. The manufacturers have been reducing those levels of zinc bit by bit over the past several years to meet newer American Petroleum Institute standards designed to keep the newer catalytic converters happier. That's OK for vehicles with hydraulic lifters and such, but that's not such great news if you're tooling around on some nice old school clickety-clackety classic. Aside from using it for its intended purpose of breaking in a freshly-rebuilt engine, just about two ounces per quart of motor oil of this Lucas goo will keep those tappets happy as they can be. You don't need to overdo it: a little dab will do ya. A single 16 ounce bottle should cover maybe four or five oil changes, depending on how much you're topping off in between them. Adding just a couple of ounces of this "Lucas Oil 10063 Engine Break-In Oil Additive" to whichever oil one uses was recommended by guys who really know what they're talking about over on the superb 'Unofficial Royal Enfield Community Forum', and you know what? Since getting my own 2005 Bullet 500 single about 14 months ago and more than doubling the mileage on its clock, adding well over 5,000 miles, using this goo I have yet to have needed to adjust its tappets even once--normally a very common regular maintenance task of the breed. Nope: Not one time. I check them, sure, but there's just no wear.

Used with no problems, seems to work good

This is a must have when breaking in new engines. This is the only additive I could find in Northern ontario where high zinc base oils are near impossible to get.

fast service

Hard to find , good price , got it next day

Seems to work as it is supposed to. Well packed.