Mt Tam I am's Driving Journal

blackcherry20 · 07-21-2013, 11:25 AM

Quote:

Originally Posted by MightyBobo

You need to flush your clutch fluid and replace with better quality stuff. You cooked it. Probably needs bleeding by now, anyway.

Sent from my Galaxy S3

Quote:

Originally Posted by Mt Tam I am

I replaced my fluid with the DOT 5.1. The old fluid looked burnt. This was around 10K miles. I should do it again soon.

Thx guys...did some thread searching and discovered lots of information.
Not the first time this has happened so i prob do need to change it. Should have thought about this sooner. Ugh.

Easy to change and bleed in your opinions?
Is DOT 5.1 the same as Motul that everybody talks about?! And do you guys have strong opinions on it?

MightyBobo · 07-21-2013, 05:59 PM

Quote:

Originally Posted by blackcherry20

Thx guys...did some thread searching and discovered lots of information.
Not the first time this has happened so i prob do need to change it. Should have thought about this sooner. Ugh.

Easy to change and bleed in your opinions?
Is DOT 5.1 the same as Motul that everybody talks about?! And do you guys have strong opinions on it?

It is fairly easy to change out, yes, assuming you have easy access to squirm under your car. It's MUCH easier with a power bleeder of some sort...

wstar · 07-21-2013, 11:28 AM

Are you sure DOT5.1 fluid is a good idea? Most run a good DOT4 like Motul RBF600 or Castrol SRF. I know 5.1 is technically 4-compatible (unlike 5.0), but I think it's also significantly different in viscosity and chemical composition from DOT4.

Mt Tam I am · 07-21-2013, 12:04 PM

Quote:

Originally Posted by wstar

Are you sure DOT5.1 fluid is a good idea? Most run a good DOT4 like Motul RBF600 or Castrol SRF. I know 5.1 is technically 4-compatible (unlike 5.0), but I think it's also significantly different in viscosity and chemical composition from DOT4.

It is silicone based and not DOT 4 compatible. I am using DOT 5.1 as my brake fluid too. It all needed to be flushed first.

I would happily use DOT 4. Most importantly change the fluid, even with DOT 3.

I boiled my DOT 4 at Laguna Seca, so on to 5.1.

You will never boil DOT 4 at auto cross.

wstar · 07-21-2013, 12:59 PM

Well, it's less about the DOT rating than it is the specific wet boiling point. The 5.1 standard has a higher minimum rating, but in practice a specific brand of DOT4 may exceed most DOT 5.1's, etc.

Silicone is completely incompatible with systems not designed for it and can't be mixed, but that's DOT5 and not relevant here.

DOT3, DOT4, and DOT5.1 are all polyethylene glycol (not silicone) and technically compatible, but DOT5.1 has different viscosity than DOT4, and most of the weekend racers are using high-end DOT4 fluids. Which DOT5.1 fluid did you use?

MightyBobo · 07-21-2013, 05:44 PM

I'm running DOT 4 for both of mine. AP Racing fluid.

Sent from my Galaxy S3

ChrisSlicks · 07-21-2013, 07:34 PM

Quote:

Originally Posted by MightyBobo

I'm running DOT 4 for both of mine. AP Racing fluid.

Same here. Motul 600/AP Racing 600 (same stuff different name).

I have to flush the clutch several times a year, it gets pretty nasty. Bleeding by hand is a little tricky I found, the power bleeder does a nice job.

MightyBobo · 07-21-2013, 11:05 PM

Quote:

Originally Posted by ChrisSlicks

Same here. Motul 600/AP Racing 600 (same stuff different name).

I have to flush the clutch several times a year, it gets pretty nasty. Bleeding by hand is a little tricky I found, the power bleeder does a nice job.

My problem with bleeding by hand was that the bleeder didn't have quite enough "meat" to get a wrench around, and ALSO get a tube onto :-/

Definitely time for me to re-do mine, however...

blackcherry20 · 07-21-2013, 07:41 PM

I may be learning way more than i bargained for-

blackcherry20 · 07-22-2013, 05:28 AM

Spoke to hubby about mine last night. He is familiar with all the pieces parts names processes etc....he didn't act like it was a bid deal...I guess I just need to pick up some of the stuff we wil need.
Thanks again! you guys are an invaluable resource to me in this my path through racing and autocrossing a Nissan 370Z

( Click to show/hide )

Mt Tam I am · 07-31-2013, 12:12 PM

DOT 4 was a fine fluid until I went to Laguna Seca which seems to eat brakes. I boiled the DOT 4 and the pedal went to the floor. I pumped and got a little effect and stayed on the track (till the exit). Since then it was NAPA 5.1. It was my only choice in the moment.

blackcherry20 · 07-31-2013, 12:21 PM

Quote:

Originally Posted by Mt Tam I am

DOT 4 was a fine fluid until I went to Laguna Seca which seems to eat brakes. I boiled the DOT 4 and the pedal went to the floor. I pumped and got a little effect and stayed on the track (till the exit). Since then it was NAPA 5.1. It was my only choice in the moment.

hi mt tam!!
Taking mine in to dealership on the 16th of august ....just in case of full failure later.

Mt Tam I am · 07-31-2013, 03:48 PM

It has been foggy and wet as of late. I still manage to find myself doing about 60 MPH anyway. Too fast probobally. As we all know this car is just so easy to get going and keep the speed up.

So last night leaving my mom's place I once again had a chance to go around her perfect 180 degree turn. It is usually blocked by some idiot but last night was different. I tried to allow the car way ahead to get as far along as possible before someone came up behind me. I had my opening and at the last moment tried something new. A different turn entry by going too far left then coming back in. I did this to increase my speed. It did get my speed up nearly 5 MPH but I had changed the geometry slightly. Normally I hold the wheel and it takes me right to the proper late apex.

Everything was going along fine when I decided to look down at the speedometer. When I did this, and saw I was going faster, I suddenly clipped the curb early with my right rear wheel which threw me a tiny bit and that was that. I felt stupid and then wondered what I might have done to my wheel. When I get home I'll look.

On the way home a Subaru WRX was practically pushing me while I had a car in front of me. All at once when the car ahead went a different direction and the speed limit increased to 55 MPH. This was my chance to stop being pushed and then tried to pull that Subaru along with me. He would get lost behind me so I'd slow down and wait and try and pull him some more. Eventually I tired of him and just went home.

In the garage I checked out my wheel and found the side of the tire had a rash on it but no damage to the tire or wheel.

If you are going to drive poorly, like I did, then it is good to be lucky as well.

JARblue · 07-31-2013, 05:13 PM

Glad to hear there was no real damage

Mt Tam I am · 08-05-2013, 12:36 PM

I just discovered a neighbor of mine has a new Focus ST. We drove quickly until we found the slower Audi RS5 (similar to Malibu blue). This kept up a reasonable speed until the Hybrid.

I am looking forward to discovering which neighbor has the new car. I hope we can have a little fun together.

07-21-2013, 11:28 AM	#3 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3595	Are you sure DOT5.1 fluid is a good idea? Most run a good DOT4 like Motul RBF600 or Castrol SRF. I know 5.1 is technically 4-compatible (unlike 5.0), but I think it's also significantly different in viscosity and chemical composition from DOT4. __________________ 7AT Track Car! Journal thread / Car setup details

07-21-2013, 12:59 PM	#5 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3595	Well, it's less about the DOT rating than it is the specific wet boiling point. The 5.1 standard has a higher minimum rating, but in practice a specific brand of DOT4 may exceed most DOT 5.1's, etc. Silicone is completely incompatible with systems not designed for it and can't be mixed, but that's DOT5 and not relevant here. DOT3, DOT4, and DOT5.1 are all polyethylene glycol (not silicone) and technically compatible, but DOT5.1 has different viscosity than DOT4, and most of the weekend racers are using high-end DOT4 fluids. Which DOT5.1 fluid did you use? __________________ 7AT Track Car! Journal thread / Car setup details

07-21-2013, 05:44 PM	#6 (permalink)
MightyBobo A True Z Fanatic Join Date: Feb 2009 Location: Las Vegas, NV Posts: 8,465 Drives: No cars; only bikes Rep Power: 53	I'm running DOT 4 for both of mine. AP Racing fluid. Sent from my Galaxy S3 __________________ I don't own a car anymore.

07-21-2013, 07:41 PM	#9 (permalink)
blackcherry20 A True Z Fanatic Join Date: May 2012 Location: Southern Ohio Posts: 22,749 Drives: ‘17 badazz Z51 Rep Power: 240460	I may be learning way more than i bargained for- __________________ Grand Sport Corvette Arctic White

07-22-2013, 05:28 AM	#10 (permalink)
blackcherry20 A True Z Fanatic Join Date: May 2012 Location: Southern Ohio Posts: 22,749 Drives: ‘17 badazz Z51 Rep Power: 240460	Spoke to hubby about mine last night. He is familiar with all the pieces parts names processes etc....he didn't act like it was a bid deal...I guess I just need to pick up some of the stuff we wil need. Thanks again! you guys are an invaluable resource to me in this my path through racing and autocrossing a Nissan 370Z ( Click to show/hide ) stil pretty exciting to me!! __________________ Grand Sport Corvette Arctic White

07-31-2013, 12:12 PM	#11 (permalink)
Mt Tam I am A True Z Fanatic Join Date: Jun 2010 Location: California Posts: 10,709 Drives: 370Z T/S/N 6MT & XKE Rep Power: 3844	DOT 4 was a fine fluid until I went to Laguna Seca which seems to eat brakes. I boiled the DOT 4 and the pedal went to the floor. I pumped and got a little effect and stayed on the track (till the exit). Since then it was NAPA 5.1. It was my only choice in the moment. __________________ "Does the carpet match the drapes? NO!!! I don't date bald women." Nissan Motorsports 34R Oil Cooler. Stillen CBE. Hotchkis Sport Sway Bars. KW Variant 3 Coilover System. Stillen Gen3 CAI. Michelin Pilot Super Sport. Stillen Brake Ducts. Carbotech™ XP10/XP8 Pads. Z1 Front Rotors. Z1 Stainless Brake Lines. Two degrees of camber

07-31-2013, 03:48 PM	#13 (permalink)
Mt Tam I am A True Z Fanatic Join Date: Jun 2010 Location: California Posts: 10,709 Drives: 370Z T/S/N 6MT & XKE Rep Power: 3844	It has been foggy and wet as of late. I still manage to find myself doing about 60 MPH anyway. Too fast probobally. As we all know this car is just so easy to get going and keep the speed up. So last night leaving my mom's place I once again had a chance to go around her perfect 180 degree turn. It is usually blocked by some idiot but last night was different. I tried to allow the car way ahead to get as far along as possible before someone came up behind me. I had my opening and at the last moment tried something new. A different turn entry by going too far left then coming back in. I did this to increase my speed. It did get my speed up nearly 5 MPH but I had changed the geometry slightly. Normally I hold the wheel and it takes me right to the proper late apex. Everything was going along fine when I decided to look down at the speedometer. When I did this, and saw I was going faster, I suddenly clipped the curb early with my right rear wheel which threw me a tiny bit and that was that. I felt stupid and then wondered what I might have done to my wheel. When I get home I'll look. On the way home a Subaru WRX was practically pushing me while I had a car in front of me. All at once when the car ahead went a different direction and the speed limit increased to 55 MPH. This was my chance to stop being pushed and then tried to pull that Subaru along with me. He would get lost behind me so I'd slow down and wait and try and pull him some more. Eventually I tired of him and just went home. In the garage I checked out my wheel and found the side of the tire had a rash on it but no damage to the tire or wheel. If you are going to drive poorly, like I did, then it is good to be lucky as well. __________________ "Does the carpet match the drapes? NO!!! I don't date bald women." Nissan Motorsports 34R Oil Cooler. Stillen CBE. Hotchkis Sport Sway Bars. KW Variant 3 Coilover System. Stillen Gen3 CAI. Michelin Pilot Super Sport. Stillen Brake Ducts. Carbotech™ XP10/XP8 Pads. Z1 Front Rotors. Z1 Stainless Brake Lines. Two degrees of camber

07-31-2013, 05:13 PM	#14 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 44 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684441	Glad to hear there was no real damage __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

08-05-2013, 12:36 PM	#15 (permalink)
Mt Tam I am A True Z Fanatic Join Date: Jun 2010 Location: California Posts: 10,709 Drives: 370Z T/S/N 6MT & XKE Rep Power: 3844	I just discovered a neighbor of mine has a new Focus ST. We drove quickly until we found the slower Audi RS5 (similar to Malibu blue). This kept up a reasonable speed until the Hybrid. I am looking forward to discovering which neighbor has the new car. I hope we can have a little fun together. __________________ "Does the carpet match the drapes? NO!!! I don't date bald women." Nissan Motorsports 34R Oil Cooler. Stillen CBE. Hotchkis Sport Sway Bars. KW Variant 3 Coilover System. Stillen Gen3 CAI. Michelin Pilot Super Sport. Stillen Brake Ducts. Carbotech™ XP10/XP8 Pads. Z1 Front Rotors. Z1 Stainless Brake Lines. Two degrees of camber

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