Reviews of Rislone 4405 Yellow Engine Oil Supplement Concentrate - 11 oz.

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List Price: $9.99
Sale Price: $7.11
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The loss of a cam shaft in my 1990 Jeep engine forced me to realize that the government regulators have forced the oil manufactures to remove zinc from their lubricating oils. "Yeah BIG Government", NOT!

When searching for an oil or additive that will protect my older engines properly, there are a few racing oil options and this additive to choose from. So far, my Jeep and small engines on the yard care equipment have been running well with this added to the newer zinc free oils.

I'm still trying to find out if there are any incompatibility problems between the zinc compound in this product and the calcium compound used in the oils forced on us by bureaucrats...

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My motorcycle transmission lives this stuff and so does my 99 eclipse! Great buy! Great for any old engine, period.

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It says it is what I need to keep my 1951 Mercury running right. A supplement to the motor oil to provide lubrication to a 62 year old engine who's recommended oil is no longer manufactured. Who really knows if this is doing the job. Time will tell.