Lucas Oil 10630 Engine Break-In Oil SAE 30-1 Quart

Good and work well

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.

Worked well in my new generator.

I rebuilt my classic car engine and wanted a break-in oil so I got this in the 5 quart size, unfortunately I had a high pressure line fail and lost some of the original oil, this quart was to bring the level back full. I will advise as to its effectiveness when finished with the break-in period, it does lose viscosity when hot thought.

Bought 15qt to use on my engine rebuild on a 2003 dodge 4.7. Prefilled all passages with a syringe and soaked valve train and timing chains in this overnight. Ran engine for 10 miles for initial break-in, then changed to this oil again for 600 miles, then went back to my 5w40 synthetic. No leaks, no smoke, and good oil pressure. Engine felt stronger by about 100 miles in, which means the steel moly and ductile iron rings bit the cross hatch properly but not excessively. It was assembled meticulously, but this oil played no small part. Would buy again but if using in summer like I did, I would maybe do the 40w instead (got a little timing chain rattle at hot idle with the 30w that disappeared with the 5w40 synthetic).

Good product! Higher zinc for engine breakin

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.

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.

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.