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#1 |
Registered User
Join Date: Aug 2010
Location: Netherlands, The Hague
Posts: 1,518
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mixing types of ATF
hi guys,
I used to put regular ATF in my TH400, but after the last service the shop put ATF III in it and told me that is just fine. I want to change the radiator tomorrow. I need to unhook the rad-cooler and I am afraid I will loose ATF in the proces. I only have ATF in stock. two questions: 1. will I loose any ATF when I onhook the tranny cooler from the rad? or is it ampty when not running? because it is above the tranny? 2. can I put ATF in the tranny that is holding ATF III?
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My dreamride / project:1977 GMC C15 Suburban In storage: Monster - 1974 GMC Suburban 25hundred Sold : Chevrolet Suburban K20 Silverado 1986 Guide: real HID projectors for 4x6 headlights link: DIY LED TAILLIGHTS |
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#2 |
Moderator
![]() Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,950
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Re: mixing types of ATF
You won't loose more than a few ounces of fluid changing the radiator.
Dexron I, II, III, & VI ATF can be mixed with no problems. |
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#3 |
Senior Member
![]() Join Date: Sep 2001
Location: Seattle, WA, USA
Posts: 5,817
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Re: mixing types of ATF
Correct - just have a couple of little plastic bags and some rubber bands handy when you unhook them, throw the bag over it and secure it with the rubber band. Pretty much just like you do with the brake lines when you have those disconnected.
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'69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA. |
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#4 |
Registered User
Join Date: Aug 2010
Location: Netherlands, The Hague
Posts: 1,518
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Re: mixing types of ATF
thanks guys! you really helped me with this.
IF it can be mixed, what is the big difference in them then?
__________________
My dreamride / project:1977 GMC C15 Suburban In storage: Monster - 1974 GMC Suburban 25hundred Sold : Chevrolet Suburban K20 Silverado 1986 Guide: real HID projectors for 4x6 headlights link: DIY LED TAILLIGHTS |
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#5 | |
Moderator
![]() Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,950
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Re: mixing types of ATF
Quote:
Compatibility is only guaranteed in automatic transmissions. Manual transmissions that call for Dexron III should only be filled with Dexron III. |
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