Lucas Oil 10631 SAE 30 Racing Engine Break-in Oil - 5 Quart

Lucas Oil’s SAE 30 break-in oil is excellent quality and does exactly what it’s meant to. It’s thick, high-zinc oil that provides outstanding protection during the first few hours of running a new or rebuilt engine. The formula helps parts seat properly without excessive wear and keeps everything lubricated even under high friction and heat. It pours smoothly and has a clean, professional-grade consistency. After using it, the engine ran quietly and strong with no metal shavings in the oil, showing it did its job perfectly. It’s one of the best options for small engines, go-karts, and performance builds. Five stars for protection, reliability, and proven results.

Product as described. High zinc content for engine/cam shaft breakin.

Used this oil to break in my 408 stroker and had no issues. Will be using again next time I need to break a new engine in.

Lucas 30w high zinc in mho is an exceptional break in oil. I did enough research to make it my 1st choice not only because it is half the price of Amsoil which is also exceptional, but the only high zinc I could find in strait 30w. I also added a bottle of Howards cam ZDDP. I used it for the initial break in @ 2500 RPM for 30 minutes and then changed oil to Royal Purple engine break in oil 10w30 and also added Howards Cams ZDDP for the next 500 miles. With the lousy cams and terrible lifters made today it is essential. I won't take any chances again after wiping out a cam and lifters that came in a cheap online engine kit. So far, I'm very happy with the engine and will use this break in procedure from now on.

Why did you pick this product vs others?: Excellent break-in oil perfect for new engines or rebuilds, offering great lubrication and protection for critical components during the initial run-in period. It prevents viscosity breakdown and aids in properly seating rings. The convenient 3-pack sizing is a plus, suitable for motorcycle, small engine, or classic car break-ins. A top choice for ensuring a smooth start for your engine. Will certainly purchase again.

Fantastic product from a fantastic company.

I do a lot of engine rebuilds on older engines that require the zinc additive in the oil, so the Lucas brand is outstanding and works great.

Good price!

Great oil .

Thanks works as it should

Did its job well, no damage on break in

OK

I plan to use this oil in our craftsman 21hp lawn tractor.I rebuilt the engine a few years ago but it hasn’t had much usage since then.