What is the best oil for the beast.
With the issue of taking zinc out of the new formulted oils, I need to know if anyone has the definitive answer for using an oil with the best protection for our beloved LT-5 that will provide the necessary protection that the old oils used to. I don't want to use a zinc additive because it has been reported that it destroys the catalytic converters.
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Re: What is the best oil for the beast.
I'm using the Castrol GTX 15W-40 Diesel. It has the levels of zinc etc that everyone's been talking about here at $4/qt. No additives necessary.
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Re: What is the best oil for the beast.
I think I'm going to try the Valvoline VR1 10-30 next time around. High zinc and phospherous and Marc H. said it would be a good oil. Hard to get though, not readily available at the common stores, although 60w, 50w and 20-50 weight is. Weird.
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Re: What is the best oil for the beast.
Use high mileage mobil 10W-30.
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Re: What is the best oil for the beast.
I use amsoil
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Re: What is the best oil for the beast.
Quote:
Manfred E...........:saluting: 91 #906 |
Re: What is the best oil for the beast.
Amsoil has a high zinc 10w40 that alot of us use. I'm sure your local performance shop can order it for you.
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Re: What is the best oil for the beast.
I'm switching to the Valvoline VR1 racing oil, 10-30, for the next oil change. Real high in zinc and phosphorus and Marc Haibeck said it would work well for our motors.
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Re: What is the best oil for the beast.
The is a link to a thread/poll which has the various oils most of us use.
http://www.zr1.net/forum/showthread.php?t=3039 Here is a related thread/poll on oil filters. http://www.zr1.net/forum/showthread.php?t=2476 Personally I go with Mobil 1 for both. :cheers: |
Re: What is the best oil for the beast.
Quote:
I did some reading over at the oil guy's site. Jim from FLA posted a link awhile back and I read the whole thing front to back. I think I'm going back to 10w-30 full synthetic. :cheers: Tom |
Re: What is the best oil for the beast.
I can't find that technical document I posted but its around somewhere.
The jist of the article was that Mobil 1 High Mileage was fine for the LT-5 engine. There are disadvantages to adding zinc if not done properly. I'm sure Valvoline and the others are good if you can find the 10W-30. I go with what has worked for me. I have had several engines well over 100,000 that ran like a raped ape and they were clean as a whistle. Mobil 1 works for me. I buy it often for $19.99 to $25.00 for 5 quarts. I buy a ton of it for the 3 Corvettes and Mobil 1 has a rewards program. I change my oil seasonal regardless of mileage. Many times I change it prematurely at 3,000 miles. If I get busy, then higher mileage. On my Z - its really spoiled. Often times, it only has a few hundred miles on the oil. It gets seasonal changes, especially after the winter storage if I'm in a cold state. My oil cooler oil stays in good shape as a result. It is way overkill but my oil changes are dirt cheap since I always get the oil on sale and do it myself. If memory serves me right, regular mobil 1 is good for 6 months and extended mobil is good for 1 year. (as long as within mileage limitations) I also do my coolant now at 1 year intervals. |
Re: What is the best oil for the beast.
:)
http://www.bobistheoilguy.com/cms/in...=article&id=83 This is the start of that link you posted Jim. I just had to read it from the beginning. I don't remember which chapter you specifically linked, but I read that and then realized that there was more. The only reservation that I have is that Bob sounds like he knows what he is talking about, and his flow vs viscosity vs psi stuff is a valid technical point....somehow I just can't bring myself to use a 5w- 30 or a 0w- 30 oil .... but like he says at the beginning chapter, forget what you think you know about motor oils. I find that after reading all of it that yes I held the common misconceptions because I grew up with natural base stock oils. Synthetics do not behave at all like natural base stock oils. :cheers: Tom |
Re: What is the best oil for the beast.
Just noticed this thread. Here is a link to Marc Haibeck's oil evaluation and recommendation:
http://www.zr1specialist.com/HAT%20W...5%20Engine.pdf |
Re: What is the best oil for the beast.
I use Penzoil Ultra Synthetic.
It's cleaning agents stopped the lifter ticking I had. http://www.pennzoil.com/motor-oil/pe...synthetic-oil/ |
Re: What is the best oil for the beast.
Try Joe Gibbs they currently have the very best racing oil produced in USA today. I switched from RedLine 3 years ago and never looked back. I run 0-5 or 0-20 in Wash DC area in spring thru fall.
I run it in my 1200 HP street cars and use it in the Alky 2500HP to Nitro 5000HP big motors |
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