engine oil supplements??

[ireland383]

Shell Rotella T 15/40 still has 1200 ppm of Zinc.  Nice and cheap also!

[Katfish]

Anyone have a site that shows the zinc content of these oils for comparison?

All I see are links to the Bob's the Oil Guy site, too much reading for me.  Is there a Zinc Content Chart for Dummies?

[Strawdawg]

here is a partial list....does not have a lot of the specialty oils, but some

http://www.s10planet.com/forum/showthread.php?t=26062&page=1

[Katfish]

This stuff looks pretty good, and I can get it locally.

http://www.barsproducts.com/tech/4401_tech.pdf

Brings the Zinc to >1600ppm

[Katfish]

After some more research I have decided to go this route.

http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_TB-Zinc-Plus-Engine-Break-In-Oil-Additive-(16-oz-)-Lucas-Oil-Products_7660006-P_N2049_T%7CGRP60033_____

Lucas additive has 35,000ppm Zinc, just need 4oz (1/4 bottle) to bring regular oil up to >1200ppm.
I can pick it up locally at Advanced Auto for about $12 (normally $14 but if you order it online, they always have a 20% off)

Now an oil change will be <$20 with the filter included.

[4Cruizn]

So is 1200ppm the minimum level needed?   

[Strawdawg]

That is the historical levels of good oil.  If you are running very high pressure valve springs, then I would consider adding a supplement

[Katfish]

I did a few calculations, and 4oz of additive to normal oil with 800ppm Zinc will bring it up to >1600ppm   

10-40W        Lucas             Lucas         Oil (Qts)         PPM

PPM            PPM                 oz               5                    effective

800             35,000           16               4.50                4220

800             35,000           15               4.53                4006

800             35,000           14               4.56                3793

800             35,000           13               4.59                3579

800             35,000           12               4.63                3365

800             35,000           11               4.66                3151

800             35,000           10               4.69                2938

800             35,000           9                  4.72                2724

800             35,000           8                  4.75                2510

800             35,000           7                  4.78                2296

800             35,000           6                  4.81                2083

800             35,000           5                  4.84                1869

800             35,000           4                  4.88                1655

800             35,000           3                  4.91                1441

800             35,000           2                  4.94                1228

800             35,000           1                  4.97                1014

[polarbear123]

For what it is worth I was told that after market additives were not as effective as the additives that are blended into the oil. That came from a Brad Penn rep

[JayBee]

My motor was just rebuilt (July 2011) and the rebuilder recommended Shell Rotella T 15w40 and half a bottle of Comp Cams Engine Break In Additive (6 oz) for each oil change.

[bandt]

I use the Valvoline Racing oil.

Wish I had the link but a guy on another forum paid to have an independent company test a few different oils and the VR-1 came out very well for those of us with flat tappets. I can get it locally and its not insanely expensive.

Brian

[aris_unlimited]

Anyone use Mystik or Royal Purple? The guy who had my car before me swore by Mystik.   Matt

I used to use royal purple and it seemed ok, although it did make my car run differently (almost like it had to work a little harder than it used too). Before that I always used mobil 1, just wanted to give the royal purple a try. I'm back to mobil 1 now. There is a guy around here that races professionally and he was talking to me about royal purple vs mobil 1 one time. He said he has never had an engine fail using mobil 1, but he has with royal purple. That was good enough for me lol.