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Crude grade comparison

Mars Blend vs Arab Medium

Price, Mars Blend spread, quality and refinery yields side by side. Updated .

USA (Gulf of Mexico)

Mars Blend

$83.41USD/BBL
▲ +0.74 (+0.89%)
Class
Medium/Sour
API
30°
Sulfur
1.87%
VS
Mars Blend – Arab Medium spread +9.48 USD/BBL · Mars Blend premium
Saudi Arabia (multiple fields)

Arab Medium

$73.93USD/BBL
▲ +0.01 (+0.01%)
Class
Medium/Sour
API
31.5°
Sulfur
2.49%

Mars Blend Crude vs Arab Medium Crude: on July 06, 2026 Mars Blend settled at $83.41/bbl (+0.89%) and Arab Medium at $73.93/bbl (+0.01%), putting Mars Blend $9.48 above Arab Medium. Mars Blend is medium/sour crude (30° API, 1.87% sulfur); Arab Medium is medium/sour crude (31.5° API, 2.49% sulfur).

Price history

Mars Blend vs Arab Medium price chart

Daily assessed prices in USD per barrel and the spread between them.

  • Mars Blend Crude
  • Arab Medium Crude
30-day Mars Blend avg
$104.91
30 shared days
30-day Arab Medium avg
$99.32
30 shared days
Average spread
+5.59
Mars Blend minus Arab Medium
Days Mars Blend above
26 / 30
widest $15.27 on 2026-06-09

Mars Blend – Arab Medium spread $/bbl · above zero: Mars Blend premium · below zero: Arab Medium premium

Free view: last 30 days. Gaps mark days with no assessment. Subscribe for longer history and Excel export.

View as table
DateMars BlendArab MediumSpread
28 May 2026-102.30-
08 May 2026-105.72-
28 Apr 2026-118.45-
24 Apr 2026-117.12-
15 Jun 202696.25--
12 Jun 2026100.20--
11 Jun 2026100.2090.93+9.27
10 Jun 2026104.4992.43+12.06
09 Jun 2026110.0494.77+15.27
08 Jun 2026113.5098.28+15.22
05 Jun 2026112.21103.27+8.94
04 Jun 2026114.22105.67+8.55
03 Jun 2026115.36106.10+9.26
02 Jun 2026108.00101.87+6.13
01 Jun 2026108.00101.87+6.13
29 May 2026107.54100.35+7.19
27 May 2026109.28103.52+5.76
22 May 2026115.83111.40+4.43
21 May 2026116.85112.75+4.1
20 May 2026119.41115.21+4.2
19 May 2026118.64115.94+2.7
18 May 2026120.05117.35+2.7
15 May 2026116.98114.46+2.52
14 May 2026121.23112.82+8.41
13 May 2026122.16113.65+8.51
12 May 2026121.51112.59+8.92
11 May 2026118.49111.42+7.07
07 May 2026113.97--
05 May 2026119.96119.29+0.66999999999999
04 May 2026119.96119.29+0.66999999999999
01 May 2026119.96119.29+0.66999999999999
29 Apr 2026118.44118.05+0.39
27 Apr 2026119.06117.73+1.33
01 Mar 202698.08--
Price analysis

Highs and lows by period

PeriodMars BlendArab Medium
HighLowRangeHighLowRange
7 Days---%---%
30 Days---%---%
90 Days---%---%
180 Days122.1662.1549.12%117.3573.0137.78%
365 Days122.1662.1549.12%119.2973.0138.8%

Range = (high − low) ÷ high.

Daily prices

Recent prices & spread

DateMars BlendChgArab MediumChgSpread
98.080
119.06+20.98117.73+0.61+1.33
118.44-0.62118.05-0.4+0.39
119.96+1.52119.29+1.24+0.67
119.960119.290+0.67
Full daily history for both grades since 2019 is available to subscribers.Subscribe now
Crude quality

Quality & refinery yields

How the two crudes differ in the barrel. Each property uses its own scale.

  • Mars Blend Crude
  • Arab Medium Crude

Physical & chemical properties

API gravityhigher = lighter
MB30°
AM31.5°
Sulfur contenthigher = sourer
MB1.87%
AM2.49%
Densityhigher = heavier
MB0.87 g/cm³
AM0.87 g/cm³
Viscosityhigher = thicker
MB8.5 cSt
AM10 cSt
Pour pointhigher = waxier
MB10 °C
AM18 °C

Typical refinery yields

Gasoline% of barrel
MB20-24%
AM18-22%
Diesel% of barrel
MB40-45%
AM40-44%
Jet fuel% of barrel
MB10-12'%
AM10-12'%
Residual fuel% of barrel
MB18-22%
AM20-25%

Bars show each yield range; the faint part runs from 0 to the low end. Scale 0–50%.

Full specification comparison

PropertyMars Blend CrudeArab Medium CrudeMars Blend − Arab Medium
Classification
ClassificationMedium/SourMedium/Sour
OriginUSA (Gulf of Mexico)Saudi Arabia (multiple fields)
Chemical properties
API gravity30° API31.5° API-1.5 °API
Sulfur content1.87%2.49%-0.62%
Density0.87 g/cm³0.87 g/cm³0 g/cm³
Pour point10 °C18 °C-8 °C
Viscosity8.5 cSt10 cSt-1.5 cSt
Typical refinery yields
Gasoline20-24%18-22%+2 pts
Diesel40-45%40-44%+1 pts
Jet fuel10-12'%10-12'%0 pts
Residual fuel18-22%20-25%-3 pts
Trading & logistics
Delivery basisLOOP Clovelly, LouisianaRas Tanura, Jubail
Major exchangesArgus (ASCI); CME Mars FuturesSaudi OSP
Export hubLOOP Clovelly, LouisianaRas Tanura, Jubail
Main destinationsUS Gulf Coast refineriesAsia-Pacific, Europe
Benchmark typeRegional (US Gulf)Regional/Global
Market profile
Key characteristicsUS Gulf Coast benchmark, coker feedstockSaudi Arabia medium sour, balanced yields
Refining notesHigh sulfur & resid; processed in coking refineriesBalanced refinery feedstock
FAQ

Mars Blend vs Arab Medium questions

The spread, the quality gap and why each grade is a benchmark.

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July 06, 2026 Mars Blend Crude was $83.41 and Arab Medium Crude $73.93 per barrel, so Mars Blend traded at a premium of $+9.48 over Arab Medium. Over the previous 30 shared price days the spread averaged +5.59 $/bbl, with Arab Medium priced above Mars Blend on 26 day(s).

Mars Blend Crude is a medium/sour USA (Gulf of Mexico) crude (30° API, 1.87% sulfur) and Regional (US Gulf) benchmark. Arab Medium Crude is a medium/sour Saudi Arabia (multiple fields) crude (31.5° API, 2.49% sulfur) and Regional/Global benchmark.
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