FORUM
NewLIVE CHAT

Automatic Transmission Fluid
for GM automatics &
chain-drive transfer cases

Which ATF? GM's electronically controlled 4L60E, 4L80E and 6L80E/6L90E take DEXRON-VI. The older hydraulic GM automatics, the TH350, TH400 and 700R4, get DEX/MERC (DEXRON-III / MERCON) ATF. So do the New Process chain-drive transfer cases: the NP208, NP231, NP241 and NP242.

Not sure how much? The Fluid Finder works out the cheapest mix of quarts and gallons for your unit.

DEXRON-VI / MERCON LV ATF

FLD-ATF-DEX6-Q

Valvoline's low-viscosity ATF for the GM DEXRON-VI and Ford MERCON LV specs. This is the fluid for the electronically controlled GM 4L60E, 4L80E and 6L80E/6L90E automatics in our TurnKey transmissions and powertrain packages. A new or rebuilt 4L60E takes about 11 quarts from dry, a 4L80E about 14, and a 6L80E/6L90E about 13. A routine 4L60E pan and filter service takes about 5.

DEX/MERC ATF (DEXRON-III / MERCON)

Valvoline's DEX/MERC multi-vehicle ATF covers the earlier DEXRON-III and MERCON specs. Use it in the hydraulically controlled TH350, TH400 and 700R4. It's also the fluid we use in the New Process chain-drive transfer cases: about 2 quarts for an NP231 or NP242, and 3 for an NP208 or NP241. A full TH350 takes about 10 quarts, a TH400 about 12 and a 700R4 about 11. At those volumes the gallon jug usually saves money.

Adding a Transmission Cooler?

Our auxiliary transmission cooler and its lines hold about 2 extra quarts. Top up with the same ATF your transmission uses.

Filling a Dana 18, 20 or 300 transfer case instead? Those are gear-drive cases and take 80W-90 GL-5 gear oil, not ATF.

What Takes ATF

ApplicationFluidAmountOrder
Automatic Transmissions
GM 4L60E (incl. Gen IV)Full fill, new or rebuilt unitDEXRON-VI ATF11 qt
GM 4L60E pan & filter servicePan drop refillDEXRON-VI ATF5 qt
GM 4L80EFull fill, new or rebuilt unitDEXRON-VI ATF14 qt
GM 6L80E / 6L90EFull fill, new or rebuilt unitDEXRON-VI ATF13 qt
GM TH350 (incl. Buick)Full fill, new or rebuilt unitDEXRON-III / MERCON ATF10 qt
GM TH400 (incl. AMC & Buick)Full fill, new or rebuilt unitDEXRON-III / MERCON ATF12 qt
GM 700R4Full fill, new or rebuilt unitDEXRON-III / MERCON ATF11 qt
Novak auxiliary transmission cooler (30,000 BTU)Extra fluid for the cooler & lines; match your transmission's ATFDEXRON-VI ATF2 qt
Transfer Cases
New Process NP208DEXRON-III / MERCON ATF3 qt
New Process NP231DEXRON-III / MERCON ATF2 qt
New Process NP241J / NP241ORDEXRON-III / MERCON ATF3 qt
New Process NP242DEXRON-III / MERCON ATF2 qt