Best OIL for the LT1
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From: Finland
Originally Posted by dhdenney
I'm not picking a fight or starting a war or anything like that but I think you proved MY point. 
You're right, the conventionals gum up and kinda seal things off. But if there hadn't been a leak already, then there wouldn't have been any oil sludge. So point is, a leak is a leak but synthetic tends to leak worse cuz it doesn't sludge.
You're right, the conventionals gum up and kinda seal things off. But if there hadn't been a leak already, then there wouldn't have been any oil sludge. So point is, a leak is a leak but synthetic tends to leak worse cuz it doesn't sludge.Anyone else recommend a conventional oil besides Castrol GTX 10w-30, I havent used it before... Looking for something that you guys like.
Edit: I was just looking, Castrol only offers 5W-40 here... What are you other European guys running (conventional)?
Last edited by Charging TA; Mar 3, 2006 at 05:39 AM.
I have been running Mobil 1 synthetics in my Stock Eliminator motors with good results. In a test years ago I found that the 0-30 synthetic was a tenth faster than the 20-50 dyno oil that I had been running. I have run Mobil 1 in Veronicas Z-3 and now her SLK350 without any issues (oil changes every 3,000 miles). I think that the true secret to long engine life is frequent oil changes and not too heavy oils.
Good Luck,
Daren
Good Luck,
Daren
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Originally Posted by meangreen94z
I use Mobil Synth 15w-50 every 3000 miles, car has 175,000+ miles and consumes no oil, no knock etc.
Thank you so very much for proving my point though.
200K+ on dino is no problem for the vast majority of motors these days.
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Just put in Mobil 1. KNow one here is going to see any real differences. Be honest, you cannot tell me you see changes in fuel economy or hp or any other crap without scientific studies.
Temperatures, road conditions, weight, tire pressures, and the list goes on to what makes oil an insignificant variable in any equation. Be honest!
Just put it the oil you "feel" is within your budget and because the bottle looks good.
Temperatures, road conditions, weight, tire pressures, and the list goes on to what makes oil an insignificant variable in any equation. Be honest!
Just put it the oil you "feel" is within your budget and because the bottle looks good.
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Joined: Jun 2005
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From: Finland
Originally Posted by Steve40th
Just put in Mobil 1. KNow one here is going to see any real differences. Be honest, you cannot tell me you see changes in fuel economy or hp or any other crap without scientific studies.
Temperatures, road conditions, weight, tire pressures, and the list goes on to what makes oil an insignificant variable in any equation. Be honest!
Just put it the oil you "feel" is within your budget and because the bottle looks good.
Temperatures, road conditions, weight, tire pressures, and the list goes on to what makes oil an insignificant variable in any equation. Be honest!
Just put it the oil you "feel" is within your budget and because the bottle looks good.
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Originally Posted by Charging TA
Ok but then again alot of guys dont want to switch to Synthetic oil because of problems such as leakage... So it all depends, best Synthetic oil may be Mobil 1 for some, and others may be searching for a Conventional oil.
Thats what I use, Mobil 1.
UOAs PROVE M1 5w-30 and 10w-30 result in more wear than necessary which you can reduce simply by reaching for the 0w-40 or 5w-40. I am interested in the 5w-30 Truck and SUV I saw at Walmart yesterday that lable had just been used for the 5w-40. M1 is good oil, one of the BITOG guys went 15K on the 5w-30 in his turbo VW and it turned out great, the LT1 just does not have the affinity for that particular oil than many believe it does.
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From: Finland
Originally Posted by Steve40th
What came with the car from the factory?
Thats what I use, Mobil 1.
Thats what I use, Mobil 1.
If my car was in the ~70,000 range Id switch to Synthetic, but like most LT1s on here with over 90,000... I just dont want to experience problems from it. "If its not broken, dont fix it"
Edit: Just found a post by ThirdGen
Well... you can go 2-3 times longer on (good) synthetic oil compared to conventional. All Vettes from the LT1 years and up came from the factory with Mobil 1. So when GM implemented their oil life in the Vette, they setup the calculations for synthetic. The F-bodies came with conventional. Thus GM setup the system for conventional oil for the F-bodies.
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Originally Posted by buffman
More or less that was a marketing thing, but does have to do with the fact that the vette has no oil cooler
Originally Posted by Steve40th
Yes, In 1992 GM got rid of the oil cooler, went to Mobil 1 in the LT1 Vettes.
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Joined: Oct 2003
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From: Loveland, Ohio
Originally Posted by Charging TA
Im pretty sure only certain LT1s came with Mobil 1 from the factory
Originally Posted by Gizmo
have been running Mobil 1 synthetics in my Stock Eliminator motors with good results. In a test years ago I found that the 0-30 synthetic was a tenth faster than the 20-50 dyno oil that I had been running.