Originally Posted By: edyvw
Originally Posted By: zeng
Originally Posted By: OVERKILL
Originally Posted By: harrydog
Which brings me to my concern regarding intake deposits with the direct injection engines.
the one being NOACK volatility (M1 0w-40 has a NOACK volatility of 8.8%, the general limit for Euro oils is 10%, API limit is 15%) and the other is TEOST, which AMSOIL publishes some data on, which is a specific deposit test.
Volatility, in some form, is certainly one of the culprits, but then so is oil "mist" that gets through the PCV system, which isn't affected by volatility and instead the focus here would be on the oil's propensity to form deposits.
Would love to hear if a lower SAPs C3 (referenced Quartz Ineo mc3 5W30 above) has advantage in this aspect over A3B4 oils?
Note:Both are subject to the same engine test specifications in High Temperature Deposits.
According to some tests they do. Now, the question is how much sulfur is in gas in Malaysia and what is fuel dilution in Malaysia? I do not know what kind of burn DI engines have in Malaysia, so all that influences dilution, deposits etc.
I used twice Low-SAPS oils (M1 5W30 ESP). It is great oil. Very good cold start, on pat with 0W40 M1 (which is not concern for you). However, due to dilution in the U.S. and high sulfur content, TBN (which starts very low) was depleted to below 2 after 3K.
On other hand, I used M1 0W40 numerous times, as well as Castrol 0W30 and now Castrol 0W40, and I never had any issues. Engine at 92,000 miles works as new, pulls as new, gets great MPG, can outpace easily cars that are have "sprot" name on like 20 places on their body etc.
So if you are not sure what gas you have, I would stick to M1 0W40 if you prefer that. You cannot make mistake.
In Malaysia the RON 95 is 500 ppm Euro II.However,RON 97 is 50 ppm Euro IV from Sept'15 onwards.
Singapore's gasolines are mainly Euro IV 50 ppm , not sure about Euro V in Singapore though.
More of GDI's here from VW, Audi,Ford 1.0L,Hyundai i40 2.0L, Mazdas were seen since around
2012/13.Probably 5 % of new gasoline car sales.Fuel dilution ? .... not so sure about it as
UOA's are not trendy here.
In terms of preventing/reducing excessive intake deposits in GDI's ,what OCI's would you
'predict' for a Euro C3 of TBN 7.5 (against Euro A3B4 TBN 11.x) engine oils with 500 ppm RON 95
and 50 ppm RON 97 respectively , considering our ambients of 24 - 35 C ?
Originally Posted By: zeng
Originally Posted By: OVERKILL
Originally Posted By: harrydog
Which brings me to my concern regarding intake deposits with the direct injection engines.
the one being NOACK volatility (M1 0w-40 has a NOACK volatility of 8.8%, the general limit for Euro oils is 10%, API limit is 15%) and the other is TEOST, which AMSOIL publishes some data on, which is a specific deposit test.
Volatility, in some form, is certainly one of the culprits, but then so is oil "mist" that gets through the PCV system, which isn't affected by volatility and instead the focus here would be on the oil's propensity to form deposits.
Would love to hear if a lower SAPs C3 (referenced Quartz Ineo mc3 5W30 above) has advantage in this aspect over A3B4 oils?
Note:Both are subject to the same engine test specifications in High Temperature Deposits.
According to some tests they do. Now, the question is how much sulfur is in gas in Malaysia and what is fuel dilution in Malaysia? I do not know what kind of burn DI engines have in Malaysia, so all that influences dilution, deposits etc.
I used twice Low-SAPS oils (M1 5W30 ESP). It is great oil. Very good cold start, on pat with 0W40 M1 (which is not concern for you). However, due to dilution in the U.S. and high sulfur content, TBN (which starts very low) was depleted to below 2 after 3K.
On other hand, I used M1 0W40 numerous times, as well as Castrol 0W30 and now Castrol 0W40, and I never had any issues. Engine at 92,000 miles works as new, pulls as new, gets great MPG, can outpace easily cars that are have "sprot" name on like 20 places on their body etc.
So if you are not sure what gas you have, I would stick to M1 0W40 if you prefer that. You cannot make mistake.
In Malaysia the RON 95 is 500 ppm Euro II.However,RON 97 is 50 ppm Euro IV from Sept'15 onwards.
Singapore's gasolines are mainly Euro IV 50 ppm , not sure about Euro V in Singapore though.
More of GDI's here from VW, Audi,Ford 1.0L,Hyundai i40 2.0L, Mazdas were seen since around
2012/13.Probably 5 % of new gasoline car sales.Fuel dilution ? .... not so sure about it as
UOA's are not trendy here.
In terms of preventing/reducing excessive intake deposits in GDI's ,what OCI's would you
'predict' for a Euro C3 of TBN 7.5 (against Euro A3B4 TBN 11.x) engine oils with 500 ppm RON 95
and 50 ppm RON 97 respectively , considering our ambients of 24 - 35 C ?