When it comes to the 229.3 spec sheet, MB states : "min. 1.0% fuel saving compared to 229.1". Same thing for the 229.5 oils, they claim they should AT LEAST get you 1.8% better MPG. That's what i am understanding. How's that possible? It sounds like we are talking about CAFE and something that's usually achieved with xW20 oils.
Usually, 229.1 oils are 15/10W40 while 229.5 are 5W40. The way i see it, they run their fuel economy test by simulating short trips in cold weather only. I don't see how there could be se much difference between a 15W40 with say a typical 4 HTHS vs. a 5W40 at around 3.8 HTHS, same cSt once they're both hot. Do you know what kind of test they run? How is it possible?
MB sheet 229.1 approved oils
for passenger cars with gas and diesel engines, used to be minimum spec for latest (98+) engines, high detergent, dispersant spec suitable for normal drain intervals. Based on ACEA A3, B3. Note 229.1 oils are not recommended for MB's latest (2002+) 4 valve gas M271, M275, M285 and diesel OM646, OM647, OM648 engines.
MB sheet 229.3 approved oils
for passenger cars with gas and diesel engines with extended drain interval indicator FSS up to 20,000 km, or 40,000 km - 25,000 mi, current minimum spec for 1998+ MB engines, min. 1.0% fuel saving compared to 229.1, based on ACEA A3 B4. For gas engine of the M100 series, gas engines of the M200 series and diesel engines of the OM600 series (not models with Euro 4 diesel particle filters).
MB sheet 229.5 approved oils; "MB Longlife Service Oils"
for passenger cars with gas and diesel engines with extended drain intervals beyond 229.3 oils, to 30,000 km, min 1.8% fuel saving, first oils introduced summer 2002. ACEA A3 B4. For gas engines of the M100 series, gas engines of the M200 series and diesel engines of the OM600 series (not models with Euro 4 diesel particle filters).
229.5 engine oils must be used with fleece oil filter designed for use with 229.5 engine oils.
Usually, 229.1 oils are 15/10W40 while 229.5 are 5W40. The way i see it, they run their fuel economy test by simulating short trips in cold weather only. I don't see how there could be se much difference between a 15W40 with say a typical 4 HTHS vs. a 5W40 at around 3.8 HTHS, same cSt once they're both hot. Do you know what kind of test they run? How is it possible?
MB sheet 229.1 approved oils
for passenger cars with gas and diesel engines, used to be minimum spec for latest (98+) engines, high detergent, dispersant spec suitable for normal drain intervals. Based on ACEA A3, B3. Note 229.1 oils are not recommended for MB's latest (2002+) 4 valve gas M271, M275, M285 and diesel OM646, OM647, OM648 engines.
MB sheet 229.3 approved oils
for passenger cars with gas and diesel engines with extended drain interval indicator FSS up to 20,000 km, or 40,000 km - 25,000 mi, current minimum spec for 1998+ MB engines, min. 1.0% fuel saving compared to 229.1, based on ACEA A3 B4. For gas engine of the M100 series, gas engines of the M200 series and diesel engines of the OM600 series (not models with Euro 4 diesel particle filters).
MB sheet 229.5 approved oils; "MB Longlife Service Oils"
for passenger cars with gas and diesel engines with extended drain intervals beyond 229.3 oils, to 30,000 km, min 1.8% fuel saving, first oils introduced summer 2002. ACEA A3 B4. For gas engines of the M100 series, gas engines of the M200 series and diesel engines of the OM600 series (not models with Euro 4 diesel particle filters).
229.5 engine oils must be used with fleece oil filter designed for use with 229.5 engine oils.