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2008
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Discussion Starter · #1 ·
Hi,

This is my 2nd "question" since becoming a member a few days ago. :)

I know there are other threads here about using synthetic fluids, but I'd like to hear the latest input on using synthetic lubricants on my TB (which we just bought two days ago:thumbsup:)

I've used syn engine oil, tranny and diff lubes for the last 25 years....usually Mobil 1 products.....and swear by them. Our old Chrysler T&C had 183K and was still running strong (compression within factory specs and it used no oil - no tranny problems whatsoever).

Your thoughts please..and :thx
 

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2007 gmc
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159 Posts
.........I've used syn engine oil, tranny and diff lubes for the last 25 years....usually Mobil 1 products.....and swear by them. .....
Think you answered your own question. Using good quality synthetics will help preserve and extend your vehicle's life. A little more money now for better fluids now or potentially ALOT more money later for repairs. Different people like and use different fluids for different reasons, just pick a quality one you are comfortable with.

New TB? How many miles? Any maintenance records? Do you know when all the fluids have been changed last? Probably want to change the ones you do not have information on so you know they are fresh. Just my :m2:.
 

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2008
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Discussion Starter · #3 ·
Think you answered your own question. Using good quality synthetics will help preserve and extend your vehicle's life. A little more money now for better fluids now or potentially ALOT more money later for repairs. Different people like and use different fluids for different reasons, just pick a quality one you are comfortable with.

New TB? How many miles? Any maintenance records? Do you know when all the fluids have been changed last? Probably want to change the ones you do not have information on so you know they are fresh. Just my :m2:.
Well new to us! :) 47,000 miles....was a personal lease vehicle. Oil was just changed but I need to see if I can find out when the tranny and diff fluids were changed.

I'm going to have the oil changed to Mobil 1 in the coming days, and have the other fluids changed sometime in July.
 

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2007 gmc
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I would not think they would have changed the tranny or differential fluids but it never hurts to ask. Would go ahead and plan on changing them. You do not know how the previous owner drove it and stop and go traffic drops these intervals in half which is 50,000 miles. Plus you want to upgrade the tranny fluid to the better full synthetic Dexron VI. And do not forget to flush the brake and power steering fluids either.
 

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Discussion Starter · #5 ·
I would not think they would have changed the tranny or differential fluids but it never hurts to ask. Would go ahead and plan on changing them. You do not know how the previous owner drove it and stop and go traffic drops these intervals in half which is 50,000 miles. Plus you want to upgrade the tranny fluid to the better full synthetic Dexron VI. And do not forget to flush the brake and power steering fluids either.
Do I have to run the Dex VI or can I run Mobil 1?

Good idea on the brake and PS fluids too!
 

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Premium Member
2007 chevy trailblazer_ls
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Do I have to run the Dex VI or can I run Mobil 1?

Good idea on the brake and PS fluids too!
Dexron VI is the type of tranny fluid-synthetic and Mobil 1 does offer it. I currently am running the Mobil 1 full synthetic oil for the engine and when I had the tranny fluid changed they used the Valvoline Dexron VI.
 

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Dexron VI is the type of tranny fluid-synthetic and Mobil 1 does offer it. I currently am running the Mobil 1 full synthetic oil for the engine and when I had the tranny fluid changed they used the Valvoline Dexron VI.
x2. Again, get a good quality product from a good manufacturer. Do your research and go with who you like best.
 

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Discussion Starter · #8 ·
Auto Zone has a special going on....buy 5 quarts of Mobil 1 "regular" and get a Mobil 1 oil filter for free. They also have specials on a few of the other types of Mobil 1 oils.

I've always used Mobil 1 filters so I picked up 6 qts of 5W-30 and a filter and paid $37 for the whole deal. Our TB now has 6 fresh quarts of Mobil 1 in her!
 

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2007 chevy trailblazer_ls
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1,422 Posts
Just keep on working on it and get all those fluids changed!
:iagree: Even though I have just a tick over 36,250 miles next on my list is the differential fluid and brake fluid.
 

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2002 chevy trailblazer_ltz
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dumb question but is changing the PS fluid as simple as sucking out the old stuff from the top and putting in new? what's the best PS fluid for my TB?
Yes, just suck out the old, pour new in, run it for a few minutes, repeat above a couple times to get most of the old fluid out.

BTW, I have to respectfully disagree with jackedupcanyon's advice. While it certainly can't hurt, it is VERY excessive to do those every 24k miles. Follow the service interval in the owners manual.

As for the BEST PS fluid, just buy a name brand....PS fluid isn't all that exotic.
 

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Discussion Starter · #14 ·
Yes, just suck out the old, pour new in, run it for a few minutes, repeat above a couple times to get most of the old fluid out.

BTW, I have to respectfully disagree with jackedupcanyon's advice. While it certainly can't hurt, it is VERY excessive to do those every 24k miles. Follow the service interval in the owners manual.

As for the BEST PS fluid, just buy a name brand....PS fluid isn't all that exotic.
:thumbsup::thx
 

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2004 trailblazer_lt
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5,240 Posts
Hi,

This is my 2nd "question" since becoming a member a few days ago. :)

I know there are other threads here about using synthetic fluids, but I'd like to hear the latest input on using synthetic lubricants on my TB (which we just bought two days ago:thumbsup:)

I've used syn engine oil, tranny and diff lubes for the last 25 years....usually Mobil 1 products.....and swear by them. Our old Chrysler T&C had 183K and was still running strong (compression within factory specs and it used no oil - no tranny problems whatsoever).

Your thoughts please..and :thx
Dino does fine for me...I've put over 200 thousand miles on a few of my own vehicles with it and well over a hundred thousand on patrol cars and I've never had an oil related failure. I do believe the synthetic will allow your engine to run a bit cooler, but still, I don't feel it's absolutely neccessary. I say do what makes you feel comfortable...:D
 

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2008
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Discussion Starter · #16 ·
Yes, just suck out the old, pour new in, run it for a few minutes, repeat above a couple times to get most of the old fluid out.

BTW, I have to respectfully disagree with jackedupcanyon's advice. While it certainly can't hurt, it is VERY excessive to do those every 24k miles. Follow the service interval in the owners manual.

As for the BEST PS fluid, just buy a name brand....PS fluid isn't all that exotic.
How much PS fluid should I buy? Amsoil sells their product in 16 oz. bottles.
 

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2007 gmc
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How much PS fluid should I buy? Amsoil sells their product in 16 oz. bottles.
Its not that expensive. I think I used 3 bottles of the AMS synthetic brake fluid??? If you buy more you can use it on another vehicle or save it for the next time you flush the system. Personally I do not like just sucking out the reservoir, I like pumping out all of the old fluid out. Following how to writeup on a similar but none Trailvoy vehicle:


Disclaimer
The community here at Trailvoy.com urges you to please use caution and seek professional assistance when performing modifications to your vehicle. Before attempting any modification it is advised that you refer to your service manual or contact a certified mechanic as not all trucks are the same. The staff and the associated members are in no way responsible for any damages, injuries or other harm inflicted to your vehicle or yourself which may result in attempting these modifications. The posts and content presented on this site reflect in no way the views of Trailvoy.com or it’s ownership.

A How To presented by
jackedupcanyon

Project Description
How-to flush your power steering fluid

Skill Level
Easy

Project Vehicle
Make: GMC
Model: Canyon
Year: 2007
Engine: 3.7L
Body Lift: Yes

Tools Needed
Channel locks and/or pliers
3/8" clear tubing - roughly 12" or so
3/8" barbed fitting capped on the end
3/8" clear tubing - roughly 3 – 4 ft or so
3/8" barbed fitting on both ends
Milk jug
Drain pan
Power steering fluid (full system capacity approximately +/- 48 fluid oz or so)
Hydraulic lift


Project Time
1 hour or so

Project Cost
~$30 - $40 total give or take

Project Procedure
Step 1 - Locate the power steering pump and fluid reservoir.


Step 2 - Take your short piece of 3/8" tubing, insert the barbed fitting and cap the end. (Bottom)


Step 3 - Take your long piece of 3/8" tubing and insert the double barbed end fitting at one end. (Top)


Step 4 - Locate the metal supply and rubber return lines on the steering pump reservoir.


Step 5 - With a drain pan under the truck, disconnect the rubber return line and quickly slide the short piece of 3/8" tubing capped on the end over the return connection on the bottom of the pump/reservoir. This section of tubing will fill up with the old steering fluid in the reservoir. If you have had your truck 2 or more years and have never changed your power steering fluid then it will probably look dirty but that is why you are flushing it. Picture below is with the tubing sticking out under the fender wheel well. The fluid color in the bottle was not accurately shown in the picture so I photoshopped the fluid in a syringe for a better representation. Only 2 years on the steering fluid in the truck and as you can see it was almost black.


Step 6 - Quickly slide the long piece of 3/8" tubing with the double barbed fitting and slide it over the other end of the return hose tubing. Put the end of tubing with no fitting into a milk jug or other container to catch the old fluid.


Step 7 - Take the cap off the steering pump reservoir and lift the front of the vehicle up where the tires are off the ground.


Step 8 - Turn the steering wheel a few cycles back and forth to pump the old fluid out of the system. It does not take many turns. Continue to do this till the fluid starts to spit and sputter.


Step 9 – Add new fluid to the reservoir and turn the steering wheel a few cycles back and forth to pump the new fluid thru the system. Continue to do this till you see new fluid starts to come out of the tubing. The fluid will continue to lighten up as you flush the old fluid out. Do this till you are satisfied that old fluid is flushed out enough.


Step 10 - Quickly disconnect the long tubing from the return line, short piece of 3/8" tubing capped on the end and reconnect the existing rubber return line to the bottom of the steering pump reservoir.


Step 11 - Turn the steering wheel a few cycles back and forth to pump the fluid thru the system. Lower the vehicle and check the amount of fluid in the steering pump reservoir. Add as needed.

Step 12 - Again lift the front of the vehicle where the tires are off the ground and turn the steering wheel a few cycles back and forth to pump the fluid thru the system.

Step 13 - Lower the vehicle and re-check the amount of fluid in the steering pump reservoir. Add as needed. Repeat steps 11 and 13 until the fluid in the reservoir is within the acceptable range.

Step 14 - DONE! Drive the vehicle for a day or so and recheck. Add fluid as needed.
 

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2007 gmc
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Yea you need to lift the front end to take stress off the rack and pinion and it also makes it much easier to turn the wheel back and forth to pump the old fluid out.
 
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