ZDDP Oil Additives

[5Toes]

Does anybody have any experience with adding this to your oil? Over on BITOG some people do it

http://www.lucasoil.com/products/display_products.sd?iid=82&catid=9&loc=show

http://www.bobistheoilguy.com/forums...Number=2071310

Redline makes it too - http://www.redlineoil.com/product.aspx?pid=121&pcid=1

[livetheride]

People use it. It works. I believe ForcedFirebird uses it with gtx. I just skipped it and use mobil 1 15w50 (summer) or amsoil 10w40. Plenty of ZDDP already in them, especially the amsoil (better be when its ~$55/ oil change)

[stamar]

I just put in valvoline synthetic 15 50 where is a link to the zddp in it? livetheride.

[TurboJake]

I don't add it to my oil.

I use VR1 20w50 in summer, which has a 1200PPM ZDDP content. And Rotella T6 15w-40 in winter, which because it's a 40W also has 1200PPM ZDDP content.

Both very solid oils, and cheap too.

[blocke]

I haven't used em. Like Jake, I use VR1. I have seen those commercials recently during "Powerblock" for various additives and they did get me thinking. Perhaps if I rebuild my engine I will use them from the get go, but my current M20 has over 250k on it, so I figure the damage is already done.

[5Toes]

Well more zddp is better. I am sure it doesnt hurt to add a few ounces with each oil change.

[Cabriolet]

so when i rebuilt my engine in dec 2010 i used a full bottle of zinc additive ran in only 100 miles. then used only Valvoline 15-40 full syn. when i pulled that head off jan 2012 there was still so much zinc left i was shocked, it looked like it had been painted on every part.
imo a little goes a very long way. 9k miles

[xwill112x]

Rotella. nuff said.

[nando]

Well more zddp is better. I am sure it doesnt hurt to add a few ounces with each oil change.

No. More is not always better.

There are plenty of decent oils that have enough ZDDP for an M20. Don't try to pretend you're an oil chemist.

[5Toes]

I didn't mean that 2000ppm of zinc is better for us than 1300. I meant that adding a little bit like an extra 150ppm would do no harm

[nando]

other than wasting money - sure.

[5Toes]

I have been looking into Liqui Moly for my new engine. Their 10W40 Leichtlauf has over 1300ppm of Zinc... me gusta

[ForcedFirebird]

No. More is not always better.

There are plenty of decent oils that have enough ZDDP for an M20. Don't try to pretend you're an oil chemist.

This.

I use additive with conventional/low zinc synthetics, none with Mobil1 or Rotella. If a customer is partial to a specific oil, then I add the ZDDP since in the end, I am responsible for their vehicle. More ZDDP isn't better per say.

In my own car, I run GTX and ZDDP, just because I am old school and always have been partial to GTX (plus being a cheap at times and will buy in bulk when on sale, lol).

[ForcedFirebird]

Is it me, or does this subject come up every week?

[5Toes]

I searched zddp additive and didn't see much.

Yeah I mean like buying standard 20W50 and adding the ZDDP. I wouldnt add it to Delvac or anything...

What additive do you sue firebird?