Posts Tagged: ZDDP

New Rislone

Holly, Mich. (July 25, 2012) — Rislone® Engine Oil Supplement with Zinc Treatment (ZDDP) is now super-concentrated. The cost-effective new 11 oz. bottle contains the same amount of engine-protecting ZDDP (zinc dialkyldithiophosphate) as the former 32 oz. package.

Engine oil has changed drastically over the last 30 years. While SF oil formerly had nominal values of zinc and phosphorous in the 1,500 to 1,600 ppm range, today’s SN oil has nominal zinc and phosphorous values of just 600 to 700 ppm. These levels are fine for modern car engines that have been designed with rollers or anti-friction coatings to prevent wear, but they are not sufficient to protect the camshafts, valvetrains and engines of…

The Straight Scoop on ZDDP (Zinc) Additives


Hi Rislone. The waters are really muddy right now as far as newer oils without ZDDP, and even with the zinc additive. I have procured gallons of your Rislone with ZDDP trying to protect my older engines. Having some older MGs, I keep up with the latest gossip on a very popular MG forum in the old T car section (TA TC TD TF).

In the latest issue of the New England MG T Register’s Sacred Octagon, there was an article, “Show me the ZINC�:
“During a conversation with Bob Wagner, owner of Wagner Motor Sports in Atlanta, the question about inc levels in oil came up. I told him I have been using Valvolene 20W–50 VR1 (racing oil) in five of my seven British…