Zinc In Oil For Old Cars

High zinc oil for classic cars.

Zinc in oil for old cars.

The effects of zinc oil additives on older engines. With the government setting mandates on manufacturers covering the service life of catalytic converters over 100 000 miles this caused nearly every oil manufacturer over the last 10 years to slowly remove zinc from the ingredients in their oil. Regardless if you are purchasing off the shelf oil for your classic car ilsac multi viscosity oils rated sm or cj 4 should have stated zinc and phosphorus additive supplements for use in older engines or an additional separate additive should be purchased and used with the new oil. Admin almost everyone who s into cars has an older vehicle that they love.

When it comes to older engines and classic cars high zinc content is a must and some oil manufacturers even sell special engine oil that comes with elevated zdtp or zddp zinc dialkyl dithiophosphates content. Using a high zinc oil with a high dose of zddp additives helps protect classic car and hot rod engines. Recommended for pre 1980 cars their multi grade 20w 50 is formulated with. But the reduction of zinc levels particularly were a threat to old car engines.

Today many of the well known oil companies are offering oils formulated for vintage and classic cars. Ilsac multi viscosity oils that are rated sm even feature special additives used for older engines that experts recommend for use in. Higher zinc levels in oil typically are for performance cars on the whole. Whether it s the feeling that they get behind the wheel or the way the car looks parked in their driveway they pour their time and effort into maintaining the car and keeping it looking like it s just been driven off of the lot.

Diesel oils soon followed suit until today no oil that is approved for on road use contains zinc. Chances are your classic car needs zinc oil additive to stay running strong. Nov 15 2019 by. Castrol markets a classic xl line of retro oils.

Amsoil z rod synthetic oil contains 1400 ppm zinc. This means that not all current oils are appropriate for antique autos or even for those. Zinc zddp and zdtp is especially useful for cars with flat tappet camshafts which means a lot of classic cars hot rods and older muscle cars need zinc more than other cars. These oils balance zddp detergent levels and corrosion inhibitors.