1990 Dodge RAM 150 Gas Tank Size & Fuel Capacity
Fuel tank capacity
22.0–30.0gal · 83–114 L
The 1990 Dodge RAM 150 has a fuel tank capacity of 22.0 to 30.0 gallons (83–114 liters), depending on the trim. The most common size is 22.0 gallons, used on 16 trims.
A full tank is good for roughly 330–510 highway miles or 264–360 miles around town, going by the EPA ratings.
30.0 gal · Bigger than 92% of 1990 models we list.
1990 Dodge RAM 150 fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Drive
- no difference
- Cab
- Bed
- no difference
- Engine
All 22 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| 2dr Regular Cab 4WD LB 3.9L 6cyl 4M · 4WD MPG 12 / 15Range 264 / 330 mi | 3.9L 6cyl 4M | 4WD | 22.0 gal83 L | 12 / 15 | 264 / 330 mi | |
| 2dr Regular Cab 4WD SB 3.9L 6cyl 4M · 4WD MPG 12 / 15Range 264 / 330 mi | 3.9L 6cyl 4M | 4WD | 22.0 gal83 L | 12 / 15 | 264 / 330 mi | |
| 2dr Regular Cab LB 3.9L 6cyl 4M · RWD MPG 12 / 17Range 264 / 374 mi | 3.9L 6cyl 4M | RWD | 22.0 gal83 L | 12 / 17 | 264 / 374 mi | |
| 2dr Regular Cab SB 3.9L 6cyl 4M · RWD MPG 12 / 17Range 264 / 374 mi | 3.9L 6cyl 4M | RWD | 22.0 gal83 L | 12 / 17 | 264 / 374 mi | |
| LE 2dr Regular Cab 4WD LB 3.9L 6cyl 4M · 4WD MPG 12 / 15Range 264 / 330 mi | 3.9L 6cyl 4M | 4WD | 22.0 gal83 L | 12 / 15 | 264 / 330 mi | |
| LE 2dr Regular Cab 4WD SB 3.9L 6cyl 4M · 4WD MPG 12 / 15Range 264 / 330 mi | 3.9L 6cyl 4M | 4WD | 22.0 gal83 L | 12 / 15 | 264 / 330 mi | |
| LE 2dr Regular Cab LB 3.9L 6cyl 4M · RWD MPG 12 / 17Range 264 / 374 mi | 3.9L 6cyl 4M | RWD | 22.0 gal83 L | 12 / 17 | 264 / 374 mi | |
| LE 2dr Regular Cab SB 3.9L 6cyl 4M · RWD MPG 12 / 17Range 264 / 374 mi | 3.9L 6cyl 4M | RWD | 22.0 gal83 L | 12 / 17 | 264 / 374 mi | |
| S 2dr Regular Cab 4WD LB 3.9L 6cyl 4M · 4WD MPG 12 / 15Range 264 / 330 mi | 3.9L 6cyl 4M | 4WD | 22.0 gal83 L | 12 / 15 | 264 / 330 mi | |
| S 2dr Regular Cab 4WD SB 3.9L 6cyl 4M · 4WD MPG 12 / 15Range 264 / 330 mi | 3.9L 6cyl 4M | 4WD | 22.0 gal83 L | 12 / 15 | 264 / 330 mi | |
| S 2dr Regular Cab LB 3.9L 6cyl 4M · RWD MPG 12 / 17Range 264 / 374 mi | 3.9L 6cyl 4M | RWD | 22.0 gal83 L | 12 / 17 | 264 / 374 mi | |
| S 2dr Regular Cab SB 3.9L 6cyl 4M · RWD MPG 12 / 17Range 264 / 374 mi | 3.9L 6cyl 4M | RWD | 22.0 gal83 L | 12 / 17 | 264 / 374 mi | |
| SE 2dr Regular Cab 4WD LB 3.9L 6cyl 4M · 4WD MPG 12 / 15Range 264 / 330 mi | 3.9L 6cyl 4M | 4WD | 22.0 gal83 L | 12 / 15 | 264 / 330 mi | |
| SE 2dr Regular Cab 4WD SB 3.9L 6cyl 4M · 4WD MPG 12 / 15Range 264 / 330 mi | 3.9L 6cyl 4M | 4WD | 22.0 gal83 L | 12 / 15 | 264 / 330 mi | |
| SE 2dr Regular Cab LB 3.9L 6cyl 4M · RWD MPG 12 / 17Range 264 / 374 mi | 3.9L 6cyl 4M | RWD | 22.0 gal83 L | 12 / 17 | 264 / 374 mi | |
| SE 2dr Regular Cab SB 3.9L 6cyl 4M · RWD MPG 12 / 17Range 264 / 374 mi | 3.9L 6cyl 4M | RWD | 22.0 gal83 L | 12 / 17 | 264 / 374 mi | |
| 2dr Extended Cab 4WD LB 5.2L 8cyl 4M · 4WD MPG 11 / 14Range 330 / 420 mi | 5.2L 8cyl 4M | 4WD | 30.0 gal114 L | 11 / 14 | 330 / 420 mi | |
| 2dr Extended Cab LB 5.2L 8cyl 4M · RWD MPG 12 / 17Range 360 / 510 mi | 5.2L 8cyl 4M | RWD | 30.0 gal114 L | 12 / 17 | 360 / 510 mi | |
| 2dr Extended Cab SB 5.2L 8cyl 4M · RWD MPG 12 / 17Range 360 / 510 mi | 5.2L 8cyl 4M | RWD | 30.0 gal114 L | 12 / 17 | 360 / 510 mi | |
| LE 2dr Extended Cab 4WD LB 5.2L 8cyl 4M · 4WD MPG 11 / 14Range 330 / 420 mi | 5.2L 8cyl 4M | 4WD | 30.0 gal114 L | 11 / 14 | 330 / 420 mi | |
| LE 2dr Extended Cab LB 5.2L 8cyl 4M · RWD MPG 12 / 17Range 360 / 510 mi | 5.2L 8cyl 4M | RWD | 30.0 gal114 L | 12 / 17 | 360 / 510 mi | |
| LE 2dr Extended Cab SB 5.2L 8cyl 4M · RWD MPG 12 / 17Range 360 / 510 mi | 5.2L 8cyl 4M | RWD | 30.0 gal114 L | 12 / 17 | 360 / 510 mi | |
| No trim matches all of these filters. | ||||||
Tank figures are the manufacturer's rated capacity, sorted smallest tank first. Range is tank size times EPA city or highway MPG.
How far a 1990 Dodge RAM 150 goes on a tank
Gallons left and the distance they cover at each mark on the fuel gauge, at EPA city and highway mileage. At the combined rating of 13 MPG, a full 22.0-gallon tank covers about 286 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 22.0 | 330 | 264 |
| 3/4 | 16.5 | 248 | 198 |
| 1/2 | 11.0 | 165 | 132 |
| 1/4 | 5.5 | 83 | 66 |
| 1/8 | 2.8 | 41 | 33 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 1,154 gallons, roughly 52 full tanks.
Fuel gauges aren't perfectly linear and the low-fuel light comes on with a few gallons still in the tank, so plan your stop before the last eighth.
What it costs to fill up a 1990 Dodge RAM 150
$93.94 to fill the 22.0-gallon tank from empty with regular, at this week's US average of $4.27 a gallon.
| Tank | Fuel | US avg / gal | From empty | From 1/4 tank |
|---|---|---|---|---|
| 22.0 gal | Regular | $4.27 | $93.94 | $70.45 |
| 30.0 gal | Regular | $4.27 | $128.10 | $96.07 |
By region, 22.0-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $88.44 |
| Midwest | $4.27 | $93.94 |
| Gulf CoastLowest | $3.70 | $81.40 |
| Rocky Mountain | $4.46 | $98.12 |
| West Coast | $5.42 | $119.24 |
| CaliforniaHighest | $5.89 | $129.58 |
Prices: U.S. Energy Information Administration retail averages for the week of October 26, 2026. This week's prices by state and city.
Your own price
- 22.0-gallon tank$93.94
- 30.0-gallon tank$128.10
- A year of driving (15,000 mi)$4,927
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
RAM 150 tank size in other years
1990 is the first RAM 150 model year we list.
| Model year | Tank | Longest highway range |
|---|---|---|
| 1993 RAM 150 | 22.0–30.0 gal | 510 mi |
| 1992 RAM 150 | 22.0–30.0 gal | 480 mi |
| 1991 RAM 150 | 22.0 gal | 374 mi |
| 1990 RAM 150 | 22.0–30.0 gal | 510 mi |
Frequently asked questions
What is the fuel tank capacity of the 1990 Dodge RAM 150?
The 1990 Dodge RAM 150 holds between 22.0 and 30.0 gallons, depending on the trim. 22.0 gallons is the usual size; the 30.0-gallon tank comes on the 2dr Extended Cab 4WD LB (5.2L 8cyl 4M).
How many gallons and liters does the 1990 Dodge RAM 150 gas tank hold?
The 1990 Dodge RAM 150 tank holds 83–114 liters, or 22.0–30.0 gallons in US gallons.
Which 1990 Dodge RAM 150 has the biggest gas tank?
The 30.0-gallon tank is on the 2dr Extended Cab 4WD LB, 2dr Extended Cab LB, 2dr Extended Cab SB and 3 other trims. The smallest tank, 22.0 gallons, is on the 2dr Regular Cab 4WD LB.
Does 4WD change the 1990 Dodge RAM 150 gas tank?
No. RWD and 4WD versions of the 1990 Dodge RAM 150 use the same 22.0–30.0 gal tank.
How far can a 1990 Dodge RAM 150 go on a full tank?
About 330–510 miles on the highway and 264–360 miles in town, going from full to empty at its EPA ratings. Expect less in practice, since nobody runs the tank dry.
How many miles can a 1990 Dodge RAM 150 go on a quarter tank?
About 83 highway miles or 66 in town from the 22.0-gallon tank, which has roughly 5.5 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 1990 Dodge RAM 150 take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 1990 Dodge RAM 150?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 22.0-gallon tank from empty costs $93.94. It ranges from $81.40 in the Gulf Coast to $129.58 in California.
How much does a full tank of gas weigh in a 1990 Dodge RAM 150?
About 186 pounds for the 30.0-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Sources
- Tank sizes: manufacturer-rated capacities from US-market specifications, checked against independent references. Updated October 2026.
- MPG and range: EPA ratings. Range is tank size times EPA MPG.
- Fuel prices: U.S. Energy Information Administration, week of October 26, 2026 (this week's prices).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.