Lucas Oil 10683 Hot Rod & Classic Car SAE 10W-40 Motor Oil - 5 Quart

I have used this in a 1956 Oldsmobile with a 324 and about 100k miles. I have also used it in a 1961 Chrysler Newport with a 361 with about 120k miles. All original drivetrain configuration on both vehicles. This oil worked great in ensuring had sufficient zinc content for the flat tappet lifters. Have been using this for years to take the guess work out of trying to find the right additive mix or flat tappet sensitive oils.This product isn't really needed if you have roller lifters. There is research that shows once you have the engine fully worn in after 20k miles, zinc additive may not be necessary. I decided to err on the side of caution and use this oil anyway because of the higher zinc content and have never had an issue. Some use diesel Rotella oil and that seems to work as well. I'm interested in supporting any organization that tries to keep the classic vehicle hobby alive so I felt this was the better option. Adding a separate Zinc additive never has the same positive impact as a full formulation like with this oil. I've found it provides excellent cooling properties as well. Have bought a few bottles and will buy again.

I’ve been using Lucas Oil 10683 Hot Rod & Classic Car SAE 10W-40 Motor Oil in my classic car, and I couldn’t be more satisfied! This oil is specifically formulated for older engines, and you can really tell the difference in performance. It provides excellent lubrication and reduces engine wear, giving my car smoother operation and improved performance. The 5-quart size is perfect for my needs, and it’s easy to pour without any mess. I also love the added protection it offers for high-performance engines. If you’re a classic car owner, this oil is a must-have for keeping your engine running smoothly. Highly recommend!

Just put this in my 76 Trans Am 455/4 speed. I had 20w50 Classic from another brand that pegged my oil pressure gauge and my engine ran poorly, maybe it was just too thick. Changed out to Lucas 10w40 Hot Rod & Classic and my oil pressure gauge came back down to normal and my cars runs much better. This costs more but I'll be running this oil from now on.

Excellent oil for classic cars! Provides smooth engine performance, reduces wear, and maintains steady oil pressure. Great for high-mileage engines and hot rods. No leaks or burning issues. The zinc additive protects camshafts and lifters. A trusted choice for vintage vehicles. Highly recommend for anyone restoring or maintaining an older car!

Excellent oil for classic cars! Provides smooth engine performance, reduces wear, and maintains steady oil pressure. The zinc additive protects vintage engines without harming modern components. No leaks or smoke, just reliable lubrication. Great value for the quality. Highly recommended for hot rods and older vehicles. A trusted choice for engine longevity!

High in zinc

smooth performance, reduces wear, highly recommended!

Vintage-engine armor, 10W-40 zinc-rich—smooth classic performance!