Who is using 2 stroke in their Diesel?

[kaanage]

16.7:1 ? That's a lot but then I can't remember what ratio I ran in the S (I used R30).

With the GP bikes we found that using Amsoil 100:1 oil at 50:1 or even 40:1 gave better performance than at the recommended ratio - probably had to do with better lubrication of the big end roller bearings in our case. The guys who ran A747 (semi synth/castor) used to run at around 30 or 25:1

The 2-stroke oil is supposed to make the diesel burn at a slightly higher temp as well giving more complete combustion. Some claim that it raises the cetane number slightly as a result.

[Preen59]

16.7:1 ? That's a lot but then I can't remember what ratio I ran in the S (I used R30).

With the GP bikes we found that using Amsoil 100:1 oil at 50:1 or even 40:1 gave better performance than at the recommended ratio - probably had to do with better lubrication of the big end roller bearings in our case. The guys who ran A747 (semi synth/castor) used to run at around 30 or 25:1

The 2-stroke oil is supposed to make the diesel burn at a slightly higher temp as well giving more complete combustion. Some claim that it raises the cetane number slightly as a result.

We run a little over 60. 15-16:1. Complicated reasoning, not the thread for it etc.


Yes that is what I can gather, too. From what I've read, guys have seen reduced soot buildup and actually "cleaning" of the exhaust housing of the turbo by running it.

[WEDEL.1]

I've been using 2 stroke oil for 12 months without incident. No DPF here but I still use Jasco FC oil, so far Castrol.

Maris

[duderduderini]

Hey
So is fd lower ash than fc? I read a bit on the net about the tcw3 spec and it seems the engines that have used it poo themselves so not many maufacturers recommend it
The Late Great Oil Debate
then read this
"Ashless" TCW3 vs. "Low Ash" JASO/ISO 2 stroke oil
So can a tcw3 oil even at the small dilution one would use here result in piston ring sticking etc?
I then found this and note castor oil didnt do to well

https://docs.google.com/spreadsheet/ccc?key=0Ag4oddHerRnudDF3QVJLeDRrbExmSGhsc1FlWFdue%20Hc&hl=en_US#gid=0

So WTF? The people that are using it dont have the dpf to worry about.
Mind you the diesel P filter may benefit from some of these oils but what will it do to the engine itself?
I now dont know whether I will risk it given the cost of a dpf (see post above)
N

[kaanage]

The engines having issues with TC-W3 are those running above 7000rpm for large portions of their duty cycle and they also depend on the 2 stroke oil for lubrication of the engine bottom end (crankshaft ball bearings + big end roller bearings) and top end (little end roller bearings + piston bore). None of this is relevant with our TDi engines.

I had the same concerns with castor oil but Chris Preen is confident that the higher burn temp of diesel engines vs 2-stroke petrol engines means that the 'bean' oil doesn't present issues for TDi's, either.

The germans (both in the Freelander thread and some other US threads I found) reckon that high grade 2-stroke oils promote more complete combustion than straight diesel so less soot (which is what leaves ash buildup in DPFs) is produced keeping the DPF cleaner over a longer lifetime.

Sorry about the JASO oil spec recommendations - I should have said JASO FB was OK except for engines with DPFs and that JC or above was preferable for use with those (or TC-W3)

[GoLfMan]

I just got on this and bought some Castrol Mid range stuff. Can't remember the specs. I'll run it for a while and see if I can notice less soot or quieter running