Thread: Oil additives

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Originally Posted by Dorsey

I haven't found any recent posts on this topic, so I'm starting a new one in this category. I would like to know if anyone has any personal experience with oil additives (STP, Lucas, etc.), and if so, which they liked or didn't like.

Back in the late 60's, a good friend of mine was running a '58 Chevy in F Gas with a pretty stout 327. Every two or three weekends, he would tear the engine down and find that the main bearings needed to be replaced. Because he also owned a service station, a representative of STP suggested to him that their product could reduce or eliminate that problem; that is, he would have to change the bearings less often.

All things being equal - no fresh line boring or crank truing - he found that he could go an entire season on the same set of bearings after adding the STP at the manufacturer's suggested ratio. Having sat in on several tear-downs, I can personally attest to this being true.

So, before anyone ridicules the notion of real "car guys" adding Motor Honey to their cars to keep them from smoking, I'm asking this because things have changed more than a little in the intervening 40 years.

I.M.O.,STP is nothing but an oil thickner.
Lucas is an oil stabilzer and makes oil cling to things and prevents foaming.
The best oil additive out there I.M.O.,is Comp cam's #159.
I use this in every hyd. or flat tappet engine build.
In street engines my customers have had zero hyd. or flat tappet cam failures.

Originally Posted by erik erikson

I.M.O.,STP is nothing but an oil thickner.
Lucas is an oil stabilzer and makes oil cling to things and prevents foaming.
The best oil additive out there I.M.O.,is Comp cam's #159.
I use this in every hyd. or flat tappet engine build.
In street engines my customers have had zero hyd. or flat tappet cam failures.

You should read about Lucas oil, I use it in my tranny, and power streeing, but I won't use it in my oil!
----> http://www.bobistheoilguy.com/images/lucas/lucas.htm

Pat

I don't know if it is a rumor, but I heard the GM is going to go back to selling EOS (or the same thing under a new name).

The STP red has 3932 ppm of zinc, the blue 2436 per a study I recently saw.

If you look around, you can find the old formula of diesel oil. I found some Castrol Diesel in the old formula today at a NAPA store. I bought some it it.

Originally Posted by HemiTCoupe

You should read about Lucas oil, I use it in my tranny, and power streeing, but I won't use it in my oil!
----> http://www.bobistheoilguy.com/images/lucas/lucas.htm

Pat

Why won't you use Lucas in your engine oil?