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Road Course/Track and Autocross For road course/track and autocross discussions.

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Old 07-16-2014, 11:54 PM   #26
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As long as you don't "cook" the oil, you don't need to change oil for every event in my opinion. I used Rotella T6 on my '01 and '06 Z06s and also '12 Grand Sport, and that oil never broke down after even quite a few track days in between oil changes. For my '13 Z06, I did use Mobil 1 0W-40 since GM asked dexos1 for it and that oil would be similar to Mobil1 5W-30, is factory fill for Euro Corvettes, yet provided better protection at the track. It also held up pretty good, but I honestly also had Z07 radiator on the car.
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Old 07-17-2014, 12:16 AM   #27
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Quote:
Originally Posted by SPCBA View Post
average so cal track day

2 mile laps X 15 laps X 4 sessions = decent miles
50-100 miles to and from the track = decent miles
thousand miles on the car from the last track/race day.

Sure seems like time to change fluid to me.

You know a discussion has broken down when someone compares a street driven coupe on track days to a racecar rebuilt after every day.
1220 miles! 1100 of them street! Guess it's a testament to the true ability of a engine to last so extraordinarily long in a street driven coup doing track days. Oil shoulda been changed and engine rebuilt 720 miles ago. guarantee my engine doesn't look a day older or make any less power than anyone else's here.
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Old 07-17-2014, 12:29 AM   #28
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Originally Posted by White_SS/RS View Post
1220 miles! 1100 of them street! Guess it's a testament to the true ability of a engine to last so extraordinarily long in a street driven coup doing track days. Oil shoulda been changed and engine rebuilt 720 miles ago. guarantee my engine doesn't look a day older or make any less power than anyone else's here.
When you do a track day or two, I suppose you could afford to change all the fluids after every event. When you do start going to a track day every other week, though, you start questioning if it's at all necessary.

GM itself recommends diff fluid change every 24 hours of track driving, but does not have any recommendations on oil change interval as far as I know. Perhaps they trust their oil life meter.

When you look at GT-R, the user manual recommends oil change only twice as often for heavy duty (track day) use, and recommends changing it immediately if you hit 280 degrees (?) or above if I recall correctly. So, there you have it. As long as you don't cook your oil, you don't need any of those crazy change intervals, and I don't see why LS3 would be any different
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Old 07-17-2014, 12:42 AM   #29
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Originally Posted by X25 View Post
When you do a track day or two, I suppose you could afford to change all the fluids after every event. When you do start going to a track day every other week, though, you start questioning if it's at all necessary.

GM itself recommends diff fluid change every 24 hours of track driving, but does not have any recommendations on oil change interval as far as I know. Perhaps they trust their oil life meter.

When you look at GT-R, the user manual recommends oil change only twice as often for heavy duty (track day) use, and recommends changing it immediately if you hit 280 degrees (?) or above if I recall correctly. So, there you have it. As long as you don't cook your oil, you don't need any of those crazy change intervals, and I don't see why LS3 would be any different
I can agree with that.
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Old 07-17-2014, 01:13 PM   #30
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Quote:
Originally Posted by X25 View Post
When you do a track day or two, I suppose you could afford to change all the fluids after every event. When you do start going to a track day every other week, though, you start questioning if it's at all necessary.

GM itself recommends diff fluid change every 24 hours of track driving, but does not have any recommendations on oil change interval as far as I know. Perhaps they trust their oil life meter.

When you look at GT-R, the user manual recommends oil change only twice as often for heavy duty (track day) use, and recommends changing it immediately if you hit 280 degrees (?) or above if I recall correctly. So, there you have it. As long as you don't cook your oil, you don't need any of those crazy change intervals, and I don't see why LS3 would be any different
Sounds like the GT-R has a real oil cooler.

Quote:
Originally Posted by nissanusa
Pressurized lubrication system with thermostatically controlled cooling and magnesium oil sump
Otherwise, that twice-as-often OCI recommendation is generally in line with the difference between "normal service" and "severe service" for most cars where both intervals are specified.


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Old 07-17-2014, 01:57 PM   #31
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Sounds like the GT-R has a real oil cooler.


Otherwise, that twice-as-often OCI recommendation is generally in line with the difference between "normal service" and "severe service" for most cars where both intervals are specified.


Norm
And probably also a real oil temp sensor.

I am still not sure how to proceed on keeping the engine cool. I hate having to remove the original cooler to add an extra oil cooler. I'd love to be able to just 'add' a smaller air-cooled oil cooler inline. Alas, I'm thinking about upgrading the radiator with an LG or DeWitts unit first, and see if that helps.

FYI, a potent oil cooler set-up (Setrab 34 row Series 6 with 12-AN lines, a thermostat, and fireflex hose sleeving, etc.) also costs more than $800; quite pricey.
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