What engine oil do YOU use?
12-26-2008, 11:11 PM
#82
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For your Miata driven on the track as well as on the street I would recommend the Motor Oil, the 10W30 would be a good choice if clearances on bearings are about stock or 10W40 if somewhat looser than stock. The Motor Oil has a full additive package so could be left in for the full season, the track days are beneficial to the oil easily boiling out contaminates if it reaches a reasonable operating temperature.
I have Rotella dino straight 40w in the car now and plan on running my first track day on that. After that and a couple thousand miles I should have all the break-in shrapnel out and ready for a proper oil analysis, I'll call the motor "broken-in" after that.
With whatever oil I start with, I'll do an oil analysis after each track day, then make my decision based upon performance and change interval. I'll probably start with Redline, which I expect to protect better and last longer, but Rotella dino or syn is cheap and readily available at wal-mart...we'll see.
Weight and viscosity will be different for each oil, motor, and condition. You probably already know this but weight and viscosity are based upon those, and you run the thinnest oil you can to achieve the desired minimum pressure. That was 20w50 in my 1.6 motor, and it still only made 55psi at redline on the track in 100* heat (probably needed an oil cooler, regardless of what m.net says). My current motor is hitting the relief valve (90psi) at 3500rpm in 80* heat at 215* oil temp during a mountain run with the straight-40 dino oil(awesome motor
). Considering I have that oil cooler, I may end up running something lighter than 10w30 as long as the pressure is high, and it may be Rotella dino...I'm going to let the data select the lubricant.
If I learned anything from BITOG and a library of UOA's, its:
Rotella T dino oil outperforms anything this side of redline, motul, brad penn, and schaeffer. I'll never spend a cent on a GIII oil aside from Rotella (or delvac); all the "over the counter" synthetics are inferior in every way.
If you're not spending extended time on the track at high rpm, oil selection doesn't really matter aside from change intervals and oil pressure
You must get oil temps up to 220+ degrees or contaminants will kill lubrication
wix filters are one of the best made (I bought a case)
gear oil selection is super important. Our cars like Motul and Schaeffer. I suspect my Mobile1 gear oil sheared out and caused my 4th gear synchro to die.
re-pack all bearings with Reline grease, they'll last forever if you do.
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12-29-2008, 08:51 AM
#86
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Heavy Duty Engine Oil (HDEO) - Diesel/Gas Pickups/Trucks/Vans - Bob Is The Oil Guy
every other thread discusses rotella.
every other thread discusses rotella.
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12-29-2008, 09:06 AM
#87
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this thread has a handful of people who actually go racing, discussing oil choices.
Endurance Race Oil? - Bob Is The Oil Guy
Again, if you're going racing, then just run HDEO because you're not driving the car hard in comparison.
Endurance Race Oil? - Bob Is The Oil Guy
Again, if you're going racing, then just run HDEO because you're not driving the car hard in comparison.
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12-29-2008, 12:17 PM
#91
...and I heard back in 2003 from an engineer that worked for yokohama at a champ car race that the ES100 was going to be a far superior autocross street tire to the Falken Azenis.
I'm not saying that Redline isn't great oil. I'm saying people trying to sell you stuff have a huge interest in telling you what you want to hear.
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12-29-2008, 01:28 PM
#92
I've been looking at the BITOG forum and have to give Hustler some props. In typical fashion he's over thinking everything. He's been over at BITOG doing the research and asking the questions. They have a ton of Used Oil Analysis charts from different types of vehicles and different uses. Many of them heavy hauling, racing, HPDE/autox/dd cars or other hard uses.
Redline does very well there. The UOA's from many sources show it is consistently one of the best performing and lasting oils out there. Rotella is also a very good product when looking at the UOA's.
Yes there are other good products. I'm not saying Mobil 1 sucks, etc. I'm just looking at consistency and volume of information. Both Redline and Rotella are hard to find fault in. Both are readily available across the country. Some lesser known and highly regarded oils are hard or impossible to find depending on where you live.
I realize the Redline guy responding to Hustler's questions is going to praise his product. I was greatly impressed that you can actually ask them questions about their products and get good and thoughtful responses back. That says a lot about Redline's support of their product in the racing and enthusiast community.
To be clear Hustler. Are you endorsing the Rotella Sythetic or Dino? Both?
Redline does very well there. The UOA's from many sources show it is consistently one of the best performing and lasting oils out there. Rotella is also a very good product when looking at the UOA's.
Yes there are other good products. I'm not saying Mobil 1 sucks, etc. I'm just looking at consistency and volume of information. Both Redline and Rotella are hard to find fault in. Both are readily available across the country. Some lesser known and highly regarded oils are hard or impossible to find depending on where you live.
I realize the Redline guy responding to Hustler's questions is going to praise his product. I was greatly impressed that you can actually ask them questions about their products and get good and thoughtful responses back. That says a lot about Redline's support of their product in the racing and enthusiast community.
To be clear Hustler. Are you endorsing the Rotella Sythetic or Dino? Both?
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followed by hasty retreat
12-30-2008, 09:54 AM
#94
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...and I heard back in 2003 from an engineer that worked for yokohama at a champ car race that the ES100 was going to be a far superior autocross street tire to the Falken Azenis.
I'm not saying that Redline isn't great oil. I'm saying people trying to sell you stuff have a huge interest in telling you what you want to hear.
I'm not saying that Redline isn't great oil. I'm saying people trying to sell you stuff have a huge interest in telling you what you want to hear.
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12-30-2008, 10:03 AM
#95
So is there a consensus here? Im gonna have to change my oil in 100 miles.
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12-30-2008, 10:05 AM
#96
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I've been looking at the BITOG forum and have to give Hustler some props. In typical fashion he's over thinking everything. He's been over at BITOG doing the research and asking the questions. They have a ton of Used Oil Analysis charts from different types of vehicles and different uses. Many of them heavy hauling, racing, HPDE/autox/dd cars or other hard uses.
Redline does very well there. The UOA's from many sources show it is consistently one of the best performing and lasting oils out there. Rotella is also a very good product when looking at the UOA's.
Yes there are other good products. I'm not saying Mobil 1 sucks, etc. I'm just looking at consistency and volume of information. Both Redline and Rotella are hard to find fault in. Both are readily available across the country. Some lesser known and highly regarded oils are hard or impossible to find depending on where you live.
I realize the Redline guy responding to Hustler's questions is going to praise his product. I was greatly impressed that you can actually ask them questions about their products and get good and thoughtful responses back. That says a lot about Redline's support of their product in the racing and enthusiast community.
To be clear Hustler. Are you endorsing the Rotella Sythetic or Dino? Both?
Redline does very well there. The UOA's from many sources show it is consistently one of the best performing and lasting oils out there. Rotella is also a very good product when looking at the UOA's.
Yes there are other good products. I'm not saying Mobil 1 sucks, etc. I'm just looking at consistency and volume of information. Both Redline and Rotella are hard to find fault in. Both are readily available across the country. Some lesser known and highly regarded oils are hard or impossible to find depending on where you live.
I realize the Redline guy responding to Hustler's questions is going to praise his product. I was greatly impressed that you can actually ask them questions about their products and get good and thoughtful responses back. That says a lot about Redline's support of their product in the racing and enthusiast community.
To be clear Hustler. Are you endorsing the Rotella Sythetic or Dino? Both?
I find fault in Mobile 1. Its roughly 3x the price of Rotella Dino, and they're just about equal performers in TBN, shear, and viscosity w/heat.
I'm still torn on oil choice. I'm looking at both rotella dino and syn. I've used rotella dino in both cars. I thought about this last night.
I'm going to put 1-2k miles on my car with Rotella dino, then do a track day on it, and send it out for a UOA. It will be royally fucked with all kinds of crazy #'s since its a new motor, getting hot for the first time. Then I'm going to run Rotella Syn and do a UOA after each track day. If I can get 4 or more track days on a change, then I'll stick with Rotella syn because its $25 per gallon, I can get it at Osama-bin-walmart, and that change interval is convenient.
I'm going to spend $20 per analysis, but I and everyone here will know exactly which oil to put in their track car, with data to back-up the decision.
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12-30-2008, 10:09 AM
#97
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I use Rotella myself but by no means am suggesting that everyone should. Your call.
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12-30-2008, 10:21 AM
#98
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I really wish however that they had repeated the tests after each of the oils had been run through an engine for several thousand miles. IMO, that would have been the real key point- to see whether the performance of the miracle oils tapers off and becomes equal to that of the others after they've got some mileage on them.
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12-30-2008, 10:33 AM
#99
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Very enlightening. My favorite (M1 0w40) seems to have fared quite poorly.
I really wish however that they had repeated the tests after each of the oils had been run through an engine for several thousand miles. IMO, that would have been the real key point- to see whether the performance of the miracle oils tapers off and becomes equal to that of the others after they've got some mileage on them.
I really wish however that they had repeated the tests after each of the oils had been run through an engine for several thousand miles. IMO, that would have been the real key point- to see whether the performance of the miracle oils tapers off and becomes equal to that of the others after they've got some mileage on them.
This **** justifies the need for a UOA for people like us.
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