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Old 02-05-2010, 02:55 PM   #1 (permalink)
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Default Is it safe to mix transmission fluid?

Is it safe to add Mobile 1 synthetic ATF to mix with Castrol or Dextron?
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Old 02-05-2010, 03:01 PM   #2 (permalink)
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Are you mixing syn with syn?
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Old 02-05-2010, 04:40 PM   #3 (permalink)
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Yes its fine if you are doing a drain and fill. I would at least do 2 drains and fills though to try to get as much as the old stuff as possible.
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Old 02-06-2010, 06:01 AM   #4 (permalink)
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Yes, it would be OK but why waste all that money adding a quart or two of Mobil 1 to so many quarts of dirty old Dextron.
What exactly are you trying to do, add/top off your tranny or a drain and refill?
What condition is your current fluid in, red, or burned and brown?
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Old 02-06-2010, 07:25 AM   #5 (permalink)
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Use Royal Purple, been using it forever without issues.
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Old 02-07-2010, 03:27 PM   #6 (permalink)
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Quote:
Originally Posted by vansdonk View Post
Use Royal Purple, been using it forever without issues.
Well for now I'm topping it off with Lucas Tranny Fix until I can find someone to fill it up. Pep Boys Midas Jiffy Lube all refused to work on it because it does not have a dip-stick.

Afterwards I'm guessing my only choice is to buy a NEW tranny pan from Atlantic British and pay thier rip off cost of $150.00 for a pan then buy new tranny bolts and screws and pay for new ATF fluid/filter then pay for the mechanic to fix it:

$150.00 = pan
$50.00 = screws
$30.00 = fliud
$60.00 = filter kit
$50.00 = shipping
$150.00 = mechanic
$10.00 = gas to drive to mechanic

TOTAL BEND ME OVER COST SO FAR = $500.00

I just want this gawd-damm leaks to stop...... Tightning the bolts did not work and no telling when I'm going to fry the transmission. So if there is ANYTHING ELSE I'm missing on this list to ensure the leaking from the bolts stops could anyone PLEASE tell me when you get a chance???? I've waited way too long and need to move forward with this thanks.
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Old 02-07-2010, 03:56 PM   #7 (permalink)
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Whoa! You don't want to add anything that is labeled "fix", any stop leak type product will have a seal swelling agent that will ruin the trans. The only thing you want to add is Dexron III, the cheaper the better as anything labeled Dexron III has to meet minimum specs. The pan can be sourced from a number of used parts places or a local transmission shop can probably get you one with all the bolts and dipstick as well as the filter kit way cheaper than AB. I thought the bolts and cleats were the same from the earlier units, you may just need a pan with dipstick and the filter kit. Have you tried John Gadd (Roverdude)?

Take the truck to a transmission shop, they can probably fix the leak for the cost of doing the fluid and filter service.
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Old 02-07-2010, 04:04 PM   #8 (permalink)
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Why buy a new pan? Is your original cracked?
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Old 02-07-2010, 04:10 PM   #9 (permalink)
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Really, it's not that hard to do yourself. And it will help you to learn your vehicle. Fix isn't a fill. If you went as far to fill it with fix, you could have put anything in there. Please don't drive this too much. You need to get a Rave and track down the leak. There are a bunch of parts sites-RN included-that can help you with tech questions and ordering. IMHO, the only reason you would need new pan is that this one has substained damage. Screws don't cost $50, and the old ones were probably cleanable and reusable. Can't say anything bad about shipping and mech prices. This statement is just my opinion.
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Old 02-07-2010, 07:12 PM   #10 (permalink)
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He's wanting to swap the pan for the 4HP22 pan with the dipstick.
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Old 02-07-2010, 09:17 PM   #11 (permalink)
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Quote:
Originally Posted by osiristheclown View Post
He's wanting to swap the pan for the 4HP22 pan with the dipstick.
Oh, I'm under mine so much for offroad checks I guess it's just habit to pull plug on trans and t-case and check. I guess I never thought about putting in a new pan for a quick look. Nice idea.
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Old 02-07-2010, 11:06 PM   #12 (permalink)
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Quote:
Originally Posted by vansdonk View Post
Oh, I'm under mine so much for offroad checks I guess it's just habit to pull plug on trans and t-case and check. I guess I never thought about putting in a new pan for a quick look. Nice idea.
Hmm...definitely not a bad idea WLA. I may look into it as well.....
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