The Camaro Club (UK)

hi all,
I am after some help, it time to prep for an oil change before the weather gets nice.
After doing some reading I have heard ZDDP (zinc additive) is the best way to go when using modern oil.
Does anyone have any thoughts on this and know were I can get it apart from the U.S.?

Inf: I have a 1967 327

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Yay ,modern oils do not protect flat tappet cams and if the engine has heavy dual performance valve springs the results are not pretty .

Some info;

http://www.motorweek.org/features/goss_ ... n_your_oil
"GOSS: Okay, so if somebody has an older engine is it a problem or can they buy a special oil that has more zinc in it?

SMITH: Well it’s not a problem once the engine is broken in. The big issue is when they break the engine in, so if they are rebuilding an older engine they really need to use something like a racing oil where there’s a higher level of phosphorous in it. And racing oils, they can still be the 1,200 parts-per-million and get a good beak in on the engine. After that they are fine at running it at the 800 parts-per-million."

http://www.bobistheoilguy.com/forums/ub ... p?ubb=cfrm

At the moment I use Castrol GTX SAE 15W-50 API SL/CF; ACEA A3/B3
Apparently API SL, "specification is for a minimum of 1,000 ppm P, which we can loosely correlate with around 1,000 ppm ZDDP. There were no massive cam failures when the SL spec was common, so it's a fairly safe bet."
I´ve also read that there have been no reports or claims
due to reduced levels of ZDDP.
Also adding an additive to an oil can be detrimental, more is not always better.


Summit will ship this abroad.....apparently.

Comp Cams Assembly Lubricant, for Camshaft Break-In, 4 fluid oz., Each $8.49

http://www.summitracing.com/int/parts/cca-152/overview/

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Well I have decided to go for Valvoline VR1 20w50, this has a high Zinc content so no requirement for an additive. That is unless anyone has a good reason not to?

I would not be using this if I had a CAT though as I have read is destroys catalytic converters. But for the old girl this will be fine

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Not sure if you've done a search on this site for zddp but it came up as a suggestion a few years ago on a reply to one of my threads. I was recommended Valvoline R by evilzee and a couple of others (same stuff as you mention below i believe) and to also use zddp additive with it. Real Steel sell it here in the UK, they are based in West Drayton Middlesex.

HTH!

Cheers,

Ray

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As stated, ZDDP is required for flat tappet cams, less so with stock hydraulic cams and as you progress up the scale with FT cams, the need becomes greater.
I used to use VR1 but have lost a couple of cams now so on recommendation, have switched to Joe Gibbs HR1 oil. No additive required.
I would say VR1 is OK for stock or very mild hydraulic cams, but anything aggressive or solid would be better off with Joe Gibbs or maybe the Lucas racing oil. HTH
Cheers, Martin

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I will try the valvoline first as my engine is stock apart from the carb and exhaust, plus it's easy to come by in Germany.
I have been lucky as I have topped up the oil with modern oil over the last year, I have a feeling many are using modern oil. Unless you make a point of researching the engine oil needs you would never know.

I will be speaking to as many of my american car buddies as possible to promote the fact that a high zinc content oil is required.

Thanks for all the help guys, this site never fails to deliver

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Remember the days when sex was safe and car racing was dangerous.......

Alarming to hear that even Valvoline allowed damage ...
I am running a mild cam and have got away up to now but might have to use an additive or maybe go for a blend using some Lucas that I bought at Avon Park/ Shakey last time I was there ...

Yes, and I was also adding a Comp 159 to each 5L of oil too.
Mind you, although my cam is small and streetable, it is aggressive. Too many people think certain figures, like duration and lift are the top and bottom of a cam's specs but there's a bit more to it than that, which is why there are many slow cars with big cams and some quick cars with smallish cams. Aggressive lobes need more care.
Cheers, Martin

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Thanks for the heads up on that Martin ,now you really can't go better than a top quality additive mixed with a quality oil.
That's depressing and worrying to say the least .
I was thinking that a blend of Valvoline and Lucas racing oil might be 'overkill' but after what you posted it might be safety first . Will let you know how it goes once I am back on the road ...