2018 Ram 1500

Maintenance & specsVERIFIED Jun 15, 2026
Engine Oil
5W-20
Synthetic Blend
OEM spec · MS-6395Buy oil
Capacity
7qt
with filter
6.5 qt without filter
Oil Filter
68191349AC
Mopar (OEM)
OEM spec: MS-6395

The 2018 Ram 1500 takes 5W-20 Synthetic Blend with a total capacity of 7 quarts (filter included). You’ll need a 16mm socket for the drain plug, torqued to 34 Nm. The OEM oil filter is the Mopar 68191349AC, with 5 compatible alternatives listed below. Note: this vehicle has 15 active recalls — check the recalls section below. Below you’ll find complete maintenance specs, fluid capacities, parts, and links to buy what you need.

⚑ QUICK DIY TIPS FOR THE 2018 RAM 1500
  • Torque your drain plug to 34 Nm (25 ft-lbs) to avoid leaks or stripped threads.
  • Using the OEM filter (Mopar 68191349AC) is recommended for warranty compliance.
  • Always use 5W-20 Synthetic Blend as specified by Ram — using the wrong viscosity can void your powertrain warranty.
  • Check the maintenance schedule below for your next service interval.
01

Oil & Filter

OilBuy
Viscosity5W-20
Oil typeSynthetic Blend
Capacity (with filter)7 qt
Capacity (w/o filter)6.5 qt
OEM specMS-6395
Filter Options
Mopar68191349ACOEM
Buy
K&NHP-2004
Buy
Bosch3312
Buy
Mopar04892339ABOEM
Buy
Mopar68492616AAOEM
Buy
MahleOX 1117D
Buy
OEM oil filter
Drain Bolt & Hardware
Socket size16 mm
ThreadM14x1.5
Torque spec34 Nm
GasketCrush washer
4th gen DS (5.7L HEMI V8)
02

Fluid Specifications

Transmission FluidBuy
TypeATF+4
Capacity5 qt
Change interval60,000 mi
Brake FluidBuy
DOT typeDOT 3
Change interval45,000 mi
CoolantBuy
TypeHOAT
ColorPurple
Capacity8 qt
Change interval120,000 mi
Power Steering FluidBuy
TypeATF+4
03

Parts & Specifications

Spark Plugs
TypeIridium
Gap0.044
Quantity4
Change interval100,000 mi
NGKLZFR5CI-11
Buy
ChampionRE14MCC5OEM
Buy
Battery
Group size65
CCA750
Mopar65-1OEM
Buy
DieHard65-3
Buy
Tires
Size215/55R17
Front pressure33 PSI
Rear pressure33 PSI
Air Filter
Mopar68408800AAOEM
Buy
K&N33-5069
Buy
Cabin Air Filter
FramCF10285OEM
Buy
Brake Pads
Mopar68003776ACOEMfront
Buy
WagnerQC1399front
Buy
Wiper Blades
Bosch26Adriver, 26"
Buy
Rain-X26-1driver, 26"
Buy
Bosch18Apassenger, 18"
Buy
Rain-X18-1passenger, 18"
Buy
04

Maintenance Schedule

≈ every 6 months
  • Change Engine Oil & Filter
05

Torque Specifications

lug nut
HD models may be 140
130ft-lb·176.3Nm
spark plug
14mm thread, aluminum head
18ft-lb·24.4Nm
06

Safety Recalls

15
07

Technical Service Bulletins

362

Estimated Current Value

Original MSRP
$30,000
Private Party
$9,405–$10,395
Dealer Retail
$10,890–$12,375
Trade-In
$8,415–$9,405
Depreciation
67%

Estimated values assume average condition and mileage for vehicle age.

Source: estimated

Save by doing it yourself
A shop typically charges $70–$140 for this service. Buy the parts and save.
Shop oil & filters ↗
08

Tools & Supplies

Oil Drain Pan
Catch the old oil cleanly
Shop on Amazon
Funnel
Spill-free refill
Shop on Amazon
16mm Socket
For the drain plug
Shop on Amazon
5W-20 Oil
7+ quarts
Shop on Amazon
Shop parts for the Ram 1500
Find oil, filters, and maintenance parts for the 2018 Ram 1500 on Amazon.
Shop parts ↗
Step-by-step guide
Detailed walkthrough with tips for first-timers.
Read guide
How often to change oil
Intervals, severe service, and what your car needs.
Read guide
Synthetic vs. conventional
Which oil type is right for your engine and budget.
Read guide
Other 2018 Ram models
Other Ram 1500 years
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