I suppose there is lot of people here that you could put in a "thinner is better than thicker".
For my common rail diesel 1.4 HDi (Citroen C3) - PSA (Peugeot/Citroen) recommends oils from 9.8 cSt to 14 cSt @100 C - for whole Europe (from Norway to Greece).
I use (last four OCI) oil that is ~10.2 cSt @100 (ACEA C2) - despite the engine have passed more than 300,000 km. Oil consumption is about 1.5 L for 15000 km (~9000 miles) - at a same rate with 5W-30 (ACEA C2) as with previous 5W-40 (ACEA A3/B4, ACEA C3).
Furthermore, average speed (for ~15000 km) of this city car is 25 km/h, average diesel consumption is 4.6 L/100 km)- according to board computer.
I`d say that my chosen oil - is thick enough
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Anyhow, BMW 318d DPF, 2009. from Chech Republic
Originally Posted By: ilyamiee
Hi everyone,
I have a 2009 BMW 318d with 2 liter N47 engine, with quite some mileage: 175k. Stock one, DPF is in place, so LL-04 and Euro-5. Last 50k I use Castrol Edge titanium FST 5w-40 due to it high viscosity.
What would you suggest, please?
I`d try Liqui Moly
TopTec 4100 5W-40 https://pim.liqui-moly.de/pidoc/P000322/3700-TopTec41005W-40-24.0-en.pdf
TopTec 4600 5W-30 https://pim.liqui-moly.de/pidoc/P000327/3755-TopTec46005W-30-28.0-en.pdf
Bet that any will do (great) - but I would try thinner first.
Second great choice, (also from Germany) would be... e.g - Fuchs
5W-40 Titan GT1 http://www.repuestosmercedes-benz.com/PI_TITAN-GT1-5W-40_e.pdf
5W-30 Titan GT1 Pro C3 http://www.generaloils.net/PI_TITAN-GT1-PRO-C-3-5W-30_e.pdf
5W-30 Titan GT1 Pro Flex http://www.generaloils.net/PI_TITAN-GT1-PRO-FLEX-5W-30_e.pdf
I`d change these oils in no more than 15000-20000 km (5W-40 12000-15000 km).