Lucas Oil10683 Hot Rod & Classic Car SAE 10W-40 Motor Oil - 5 Quart

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!

Excellent oil for my 1970 440 ci engine.

The high zinc content is perfect for my 1967 VW Beetle. Zero issues, quick shipping, product description is exactly as described, and a fair price. Highly recommend.

The oil is high-quality and keeps my engine running smoothly, even in hot weather. I noticed an improvement in performance right away.

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

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 purchased this for my '65 GTO. After finding it met spec and was more affordable than the alternative that I had been using, it was an easy decision.

Product was as advertised.