Re: ZINC IN OIL & ZINC ADDITIVES
 

I used to add the EOS from GM, until I discovered this. It may just be marketing ploy, but it does make sense.

There is no shortage of companies producing a little bottle of “stuff” to be poured in with an oil change. And yes, the additional ZDDP will bring the engine oil composition up to the desired level – but NEVER when it is most needed – at start up.

Spectro “batch blends” their oil. A vat of base oil is heated to 200 degrees, the zinc goes in, the solution is agitated and cooled. Next the solution is heated to 300 degrees, the phosphorus goes in, the solution is again agitated and cooled. Each bottle then receives a number representing the particular batch. Compare this process to “manifold blending” where the zinc and phosphorus are added as the ambient temperature oil flows through the assembly line pipe to the bottling operation.

So, what is the big deal about batch blending vs manifold blending or even pouring in your own after-market bottle of additive? Consider the perspective of a cold engine at start up. The oil is in the bottom of the oil pan, waiting for the oil pump to deliver. Start up creates the most wear on an engine due to the momentary lack of lubrication. Now, with Spectro “cooking” their ZDDP in during the manufacturing process, the additive package gets to the moving parts as quickly as possible. With manifold blending/pour it in yourself, those additives have settled to the very bottom of the oil pan and will not be truly emulsified in solution until the oil heats up. Definitely not an optimal solution!

Re: ZINC IN OIL & ZINC ADDITIVES
 

You guys are way to technical. Listen to Rich......... Brad Penn, Rotella-T, Valvoline or Joe Gibbs. Any one of them is all you need to know. I use Brad Penn.

Re: ZINC IN OIL & ZINC ADDITIVES
 

I used brad penn religiously for years. Then for some unknown reason i thought i was safe [img]<<GRAEMLIN_URL>>/frown.gif[/img] and started using castrol gtx, pennzoil etc for about 2 years. Something went wrong with my perfectly running motor i thought a lifter or rod problem but no its a wiped lobe off the cam. Cant be absolutely certain but we think its the oil. If your running solids run brad penn oil oil or something compareable.

Re: ZINC IN OIL & ZINC ADDITIVES
 

solid lifter motors seem to be a little easier on cams Vince.

Re: ZINC IN OIL & ZINC ADDITIVES
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: [email protected]</div><div class="ubbcode-body">You guys are way to technical. Listen to Rich......... Brad Penn, Rotella-T, Valvoline or Joe Gibbs. Any one of them is all you need to know. I use Brad Penn. </div></div>

OK. Forget I made an effort to help. I'll slink back into my corner now and keep shut.

Re: ZINC IN OIL & ZINC ADDITIVES
 

I've been a big proponent of Valvoline for 40 years. All I can get in my local area is VR1... no Brad Penn or any others in any of the big box stores. Looks like special order stuff.

Re: ZINC IN OIL & ZINC ADDITIVES
 

----Gary,,,Go to any race motor builder and chances are he will have plenty of Brad Penn around and will sell you what you need. Thats what I did and do!.......Bill S

Re: ZINC IN OIL & ZINC ADDITIVES
 

Just a note on ZDDP... It can/will wipe out a catalytic converter. This is why it's gone in todays oils [and the use of roller lifters in most modern vehicles] Rotella was listed for use in diesels [no catalytic] . I guess people were using in in gas powered stuff and wiping the cats out so they lowered the use of zinc in it...

One of the Valvoline VR Oils are for 'off road use' only...Figuring it would be used in cars without cats...higher concentration of zinc in that. I get mine from advance auto parts...'for off road use'

Re: ZINC IN OIL & ZINC ADDITIVES
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: olredalert</div><div class="ubbcode-body">----Gary,,,Go to any race motor builder and chances are he will have plenty of Brad Penn around and will sell you what you need. Thats what I did and do!.......Bill S </div></div>


Non of those guys in my local area anymore. All the speed/machine shops that use to be around are long gone from here. The one I use to go to in Dover moved his business back home to Havre De Grac Maryland a couple of years ago and I haven't found a replacement yet. I couldn't tell you what most people do but really hard core muscle car people don't show themselves much anymore so I don't have a clue who to trust.

Re: ZINC IN OIL & ZINC ADDITIVES
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: DWR</div><div class="ubbcode-body">Rotella also has Zinc. I use it in my L34 with stock flat tappet hyd cam. </div></div>

Check the label. The zinc content is decreasing.