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Old 04-18-2012, 08:39 PM   #1 (permalink)
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Default Oil + additive or oil with additive in it???????

I just got my engine rebuild done and it requires ZDDP in the oil. My question is, do I use regular oil and put the ZDDP additive in it or should I go with oils that have it in the oil already. Such as Valvoline VR1 or royal purple Is one way better than the other, and is one more expensive than th other ?
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Old 04-18-2012, 11:02 PM   #2 (permalink)
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I tend to use the cheaper, regular oil and the additive, it really comes down to overall costs and whats cheaper.
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Old 04-19-2012, 02:40 AM   #3 (permalink)
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i use joe gibbs racing oil they pretty good and it pretty dependendable oil. but sometimes it pretty hard to get ahold of but they have almost oil for any high preformance engine.
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Old 04-19-2012, 05:53 AM   #4 (permalink)
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Quote:
Originally Posted by t.klapperich View Post
I just got my engine rebuild done and it requires ZDDP in the oil. My question is, do I use regular oil and put the ZDDP additive in it or should I go with oils that have it in the oil already. Such as Valvoline VR1 or royal purple Is one way better than the other, and is one more expensive than th other ?
For engine break in I would use a break in specific oil such as Joe Gibbs or Comp then switch to VR1.
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Old 04-19-2012, 06:37 AM   #5 (permalink)
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i run the valvoline race oil. its not much m,ore than regular oil and its already got the zinc in it. it keeps me from forgetting to buy the additive when i change the oil. but +1 to what tommyk said, for a fresh engine use break in oil.
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Old 04-19-2012, 09:00 AM   #6 (permalink)
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I use Amsoil 10W-40, which has the necessary zinc in it but am planning to switch to Amsoil's new "Street Rod" oil, made especially for flat tappet engines. I will go to the 10W-30. Since you can change their synthetic less often, timewise, I don't think there is any question that synthetic costs very little extra and protects better
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Old 04-19-2012, 10:16 AM   #7 (permalink)
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Quote:
Originally Posted by TommyK View Post
For engine break in I would use a break in specific oil such as Joe Gibbs or Comp then switch to VR1.
I'm going to agree here. The VR1 is under $5 quart, case of 12 runs me $52 at my local mom and pop parts store, ZDDP runs around $8 a bottle for one oil change.
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Old 04-19-2012, 11:52 AM   #8 (permalink)
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Just about every cam mfg recommends adding ZDDP (and sells) to the oil. I personally spoke to Ron Iskenderian (Isky Racing Cams) when this 1st came about a few years ago, he recommended adding 1 bottle of ZDDP ((6 oz IIRR) to each oil change and with the mod engines (Ford 4.6, etc.), about 1/3 of a bottle with each oil change.
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Old 04-19-2012, 01:48 PM   #9 (permalink)
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I don't race my 68 vert. Never in 50 years thought racing oil was best for plain driving...wierd I guess!

I use Valvoline 10W-30 in my original never rebuilt 68 289 C code. Since they reduced the ZDDP I add cam shield each change.


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Old 04-19-2012, 02:11 PM   #10 (permalink)
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Quote:
Originally Posted by slim View Post
I don't race my 68 vert. Never in 50 years thought racing oil was best for plain driving...wierd I guess!

I use Valvoline 10W-30 in my original never rebuilt 68 289 C code. Since they reduced the ZDDP I add cam shield each change.


Slim
Not weird. In fact you have a good point. Racing oil doesn't clean as well, and probably not the best choice for a daily driver. I use it for two reasons. One, the zinc is there, don't have to think about it. Two, both vehicles get very few miles and I change every six months regardless of mileage. No where near even 3,000 miles a year.
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