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Thread: What fluids need to be changed?
03-05-2010, 07:29 AM #1
What fluids need to be changed?
So Im fixing to pass 20,000 miles from when I bought my truck from the dealer and Im curious about what fluids need to be changed and what kind of fluids you guys use. I just had the transmission fluid flushed right after I got it because we were trouble shooting some shifting problems which turned out to be the computers fault.
Is there anything else besides the Oil/Oil filter, Transmission fluid/transmission filter/ Transmission pan gasket (I have a small leak also), and the rear differential fluid? Is the fluid in the differential the only thing that needs to be changed or is there something else? Also I have a small leak on the front of the rear axle. Its where the drive shaft connects to the axle. Could it be a seal busted or something similar. I looked around on autozone.com and I couldn't find the seal for it, but I dont know what its correct name is haha so I might have passed it up.
Thanks.Bagged 06 Silverado Crew Cab.
03-05-2010, 07:55 AM #2
What is the actual mileage on your truck? Look in your owers manual it has all suggested change intervals for the fluids.99 K1500 Suburban LT "THE BEAST"
Hypertech III, K&N, true dual
03-05-2010, 08:03 AM #3
The mileage Is about 78,000. The truck didn't come with a owners manual. I would like to change all the fluids around the 20,000 - 25,000 mile range.Bagged 06 Silverado Crew Cab.
03-05-2010, 08:12 AM #4
- Join Date
- Mar 2010
Change it all! ...Thats what i did! Rather be safe than sorry!debadged. k&n CAI. TBS. flowmaster. 20's. smoked tails. ..much more..
03-05-2010, 11:46 AM #5
The biggest cause of a leaky pan gasket is overtightning it. As far as what fluids to use, use the tranny fluid GM recomends and for oil; ive always used castrol GTX and Lucas Oil Stabilizer with a K&N oil filter. Its the only way to go.1995 Silverado,Z71, 3-inch lift,2-inch leveling kit, SkyJacker Suspension, short ram-air intake, throttle body spacer, MSD ignition coil, straight pipes
03-05-2010, 11:59 AM #699 K1500 Suburban LT "THE BEAST"
Hypertech III, K&N, true dual
03-06-2010, 08:02 AM #7
I feel like I'm fogeting something. Is there any other fluids that need to be changed when I change the rest. I've been using valvoline with a K&N oil filter. I'm Just not sure what to use for the differential or transmissionBagged 06 Silverado Crew Cab.
03-06-2010, 09:04 AM #8
Antifreeze,power steering,brake fluid. I just got my Tahoe in December and I changed anything that had an oil,fluid,filtered,antifreeze in it.
I have to take care of the old girl now the bank took my ford back.
Couldnt afford repairs on it..95 tahoe 2dr 4x4 200,000+ miles
03-06-2010, 09:25 AM #9
Ok so is this all I need to replace? I found a manual online and this is what it said.
Automatic transmission fluid - Dexron - VI
Rear Axle - SAE 75w-90
What about a transfer case? Or is that only on 4WD's haha
How many quarts do I need of each fluid? Sorry I'm a complete Noob when it comes to this stuff. If it's electrical I can figure it out but this stuff is confusing to me haha
Last edited by ZSI52; 03-06-2010 at 09:32 AM.Bagged 06 Silverado Crew Cab.
03-06-2010, 10:09 AM #10
I would be careful when you change everything in your transmition, it could have negative effect, I changed everything in a 97 silverado and it shocked the transmition and ended up having to get a rebuilt so now as long as my filter isn't bad I leave it in.
My transmition takes 6 quarts, 2 in torque converter and 4 in trans and lines, but thats a 700r4 not positive if its the same , and I don't know about the rear end...but yes a transfer case is only on 4wd lol
Last edited by ThatSilverStepside; 03-06-2010 at 10:13 AM. Reason: because I need to learn to read the whole post.Justin
1990 Silverado Stepside
2003 Olds Alero-
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