Q8 T 520 15W-40 is recommended for your WAGNER MT-426 (Cat 3306TA/3406PCTA)

Application	Recommendation		Capacity (ltr)
Engine (DT)	1	Q8 T 520 15W-40 (a)	27.5 / 34.0
	2	Q8 T 5000 10W-40
	3	Q8 Terra 1000 STOU 10W-40
Transmission	1	Q8 T 2300 CVT 10W-30 (do not use in engines!) (b)	26.5
	2	Q8 Terra 4000 UTTO CVT LV 75W-80
	3	Q8 Terra 4000 UTTO CVT 75W-85
Coolant	1	Q8 Antifreeze Lobrid EC-1 Premixed (c, d)	392
	2	Q8 Antifreeze Lobrid Premixed
	3	Q8 Antifreeze Long Life Premixed
Hydraulics	1	Q8 T 800 10W-30 (e)	202
	2	Q8 T 1000 (D) 10W-30
	3	Q8 Terra 1000 STOU 10W-30
Grease Points	Q8 Rembrandt Moly 2 (f)
Converter	1	Q8 T 2300 CVT 10W-30 (do not use in engines!) (g)	13.2
	2	Q8 Terra 4000 UTTO CVT LV 75W-80
	3	Q8 Terra 4000 UTTO CVT 75W-85
Front & Rear Axle	1	Q8 Trans XGS 75W-140 (h)	24.6 / 35.0
	2	Q8 Trans XGR 75W-140
	3	Q8 Axle Oil XG 80W-140
Planetaries (each)	1	Q8 Trans XGS 75W-140 (i)	4.7 / 12.3
	2	Q8 Trans XGR 75W-140
	3	Q8 Axle Oil XG 80W-140

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a.: Alternative recommendations: Q8 T 520 15W-40 / Q8 T 5000 10W-40 / Q8 Terra 1000 STOU 10W-40
b.: Alternative recommendations: Q8 T 2300 CVT 10W-30 (do not use in engines!) / Q8 Terra 4000 UTTO CVT LV 75W-80 / Q8 Terra 4000 UTTO CVT 75W-85
c.: Cooling System: Use Ethylene Glycol or Propylene Glycol antifreeze at a ratio of 30%, or one part antifreeze to two parts water. For Detroit Diesel engines 50% Ethylene Glycol antifreeze is recommended but Propylene Glycol is only suitable for the 40, 50 and 60 series, at 30%. Caterpillar recommend that Propylene Glycol should only be used at a ratio of 50%
d.: Alternative recommendations: Q8 Antifreeze Lobrid EC-1 Premixed / Q8 Antifreeze Lobrid Premixed / Q8 Antifreeze Long Life Premixed
e.: Alternative recommendations: Q8 T 800 10W-30 / Q8 T 1000 (D) 10W-30 / Q8 Terra 1000 STOU 10W-30
f.: Alternative recommendations: Q8 Rembrandt Moly 2
g.: Alternative recommendations: Q8 T 2300 CVT 10W-30 (do not use in engines!) / Q8 Terra 4000 UTTO CVT LV 75W-80 / Q8 Terra 4000 UTTO CVT 75W-85
h.: Alternative recommendations: Q8 Trans XGS 75W-140 / Q8 Trans XGR 75W-140 / Q8 Axle Oil XG 80W-140
i.: Alternative recommendations: Q8 Trans XGS 75W-140 / Q8 Trans XGR 75W-140 / Q8 Axle Oil XG 80W-140

There is no Oil Change Interval data to display for this model