For you oil fanatics ...

[GaryR]

ZDDPlus - ZDDP Oil Additive for Classic Cars

[oliver88]

careful with that stuff...too much is worse than too little! It is OK to use but follow directions and do not add too much.

[KTL]

Redline Synthetic Oil also makes this ZDDP additive. Seems to be popping up more commonly, now that the word is out ZDDP is deficient in off-the-shelf-oils and there's still a need for it in certain circumstances?.

Red Line Synthetic Oil - Motor Oil for Racing - Engine Oil Break-In Additive

[HarryD]

BTDT

ZDDPlus anyone using this in their Porsche?

Oil additive question

An Oil Additive that is worth using

What is ZDDP level of Castrol GTX 20W50?

ZDD Plus instead of EOS

ZDDP Plus Oil Additive from Eastwood

Oil Additive ZDDP +

and the ever popular: Ultimate Motor Oil Thread or Why we hate CJ4/SM oils

[dshepp806]

idiots?

[Benny771]

Someones got a poopy diaper.

[James Brown]

You right Gary, the only true test is to have 6-7 fresh engines and put different oils in them and run them for 100,000 miles then tear them down and compare wear. everything else is just personal choice. (although I like Swepco).

[GaryR]

Sorry, I was in a bad mood..

[calling911]

I know you guys have seen this.. but while you could argue a million points against its validity you cannot refute the bottom line which is the oil did not CAUSE any wear.

You hear all sorts of talk about castrol causing cam wear.. I dont think you could make any argument like that about mobil 1. I only wish they had done some high temp testing but that was not "in scope".

Mobil 1 Performance Record - Million Miles

And if you are REALLY bored.
http://www.mobil1.com.sg/academy/journey.aspx

[HarryD]

Originally Posted by calling911

I know you guys have seen this.. but while you could argue a million points against its validity you cannot refute the bottom line which is the oil did not CAUSE any wear.

You hear all sorts of talk about castrol causing cam wear.. I dont think you could make any argument like that about mobil 1. I only wish they had done some high temp testing but that was not "in scope".

Mobil 1 Performance Record - Million Miles

And if you are REALLY bored.
Mobil 1 Oil Academy - Journey through an Engine

That is a cool test in 1990.

Since this test, two significant variables have changed: use of roller tappets and reduction of ZDDP in "energy saving" oils (current API SL/SM oils). Because of this, these results may or may not reflect the impact of their current oil formulations in older flat tappet motors.

[dshepp806]

Originally Posted by HarryD

That is a cool test in 1990.

Since this test, two significant variables have changed: use of roller tappets and reduction of ZDDP in "energy saving" oils (current API SL/SM oils). Because of this, these results may or may not reflect the impact of their current oil formulations in older flat tappet motors.

ding-ding,..we've a winner!!!!!!!!!!!!!

Best,

Doyle

[calling911]

Originally Posted by dshepp806

ding-ding,..we've a winner!!!!!!!!!!!!!

Best,

Doyle

I dont have no stinkin rollers

[RWebb]

Now, I don't want to "get all epistomological on yer ass"* but in the absence of controlled, statistically valid scientific experimentation, one usually relies next on expert opinion (something akin to the clinical experience of an MD) rather than just anecdotes. Steve W. says use a good oil with adequate ZDDP and he sees a lot of motors. Charles Navarro says the same and has run various tests.

Sooooo...




* with apologies to apologies to Quentin Tarantino

[calling911]

Mobil 1 is so damn expensive these days I cant even afford an additive.. Im changing my filter 3 times between changes these days... as long as I dont get too hot I think M1 is up to the task of 6-8k.. especially with the volume of oil we run in pcars.

But hey.. this is my call.. not yours

Originally Posted by RWebb

Now, I don't want to "get all epistomological on yer ass"* but in the absence of controlled, statistically valid scientific experimentation, one usually relies next on expert opinion (something akin to the clinical experience of an MD) rather than just anecdotes. Steve W. says use a good oil with adequate ZDDP and he sees a lot of motors. Charles Navarro says the same and has run various tests.

Sooooo...




* with apologies to apologies to Quentin Tarantino

[Milo2361]

FWIW, i contacted Shell about their Rotella T 15w40 about 2 months ago, since its REALLY cheap compared to all these "racing" oils. they emailed back saying they had a minimum of 1200ppm zinc and 1100ppm phosphorus. I use this cause its economical, and if i change my oil every 3-4k miles, i think it is plenty protective. especially with 11qts..... the rotella T in a 5 gal bucket at wal-mart is about $50... that makes for around $2.50/qt...

[HarryD]

Originally Posted by Milo2361

FWIW, i contacted Shell about their Rotella T 15w40 about 2 months ago, since its REALLY cheap compared to all these "racing" oils. they emailed back saying they had a minimum of 1200ppm zinc and 1100ppm phosphorus. I use this cause its economical, and if i change my oil every 3-4k miles, i think it is plenty protective. especially with 11qts..... the rotella T in a 5 gal bucket at wal-mart is about $50... that makes for around $2.50/qt...

From what I gather, the HDEO's (Shell Rotella, Exxon Delvac, Chevron Delo) are all excellent. I recently ran Delo for 6,000 miles.

For me, the only drawback is that I prefer a 20W-50 oil. My car just seems happier with a heavier oil.

[RWebb]

Originally Posted by calling911

Mobil 1 is so damn expensive these days I cant even afford an additive.. Im changing my filter 3 times between changes these days... as long as I dont get too hot I think M1 is up to the task of 6-8k.. especially with the volume of oil we run in pcars.

But hey.. this is my call.. not yours

just be sure and disclose it to a future buyer of your car - they will want to figure out how long they can go before a rebuild.

This is not about the filter, the heat or the oil volume at all. It sounds like you misunderstand the issues re inadequate ZDDP.

-------------------------------

- Glad to hear the info on Rotella

[HarryD]

Originally Posted by calling911

I dont have no stinkin rollers

Exactly correct.

Older 911's use flat tappets not roller tappets. Per (that totally ignorant group about cars and car needs known as) SAE, that is why higher ZDDP is needed.

[Steve@Rennsport]

Originally Posted by calling911

I know you guys have seen this.. but while you could argue a million points against its validity you cannot refute the bottom line which is the oil did not CAUSE any wear.

You hear all sorts of talk about castrol causing cam wear.. I dont think you could make any argument like that about mobil 1. I only wish they had done some high temp testing but that was not "in scope".

Hi JP,

I wish we lived closer so I could show you the collection of pitted camshafts that came from engines that were run exclusively with Mobil 1.

I've seen similiar things in engines using Castrol GTX for extended intervals.

My best suggestion to you may be to educate yourself about precisely how ZDDP works (plenty of SAE papers on this) and I think you'll find that interesting and informational. For me, it was eye-opening,...........

In short, "oil ain't just oil" anymore.

That said, ultimately its your engine and one can use whatever products they choose.

[brads911sc]