OK to use 0w-40?
- Thread starter nplenzick
- Start date
I dont agree with that at all - saying one particular property of an engine oil is 'most important' is simply not correct.Zforbes said:nplenzick said:
0w40 has a greater temperature range so therefore as a grade would be superior to 0w30.
When buying oil the most important factor is how it breaks down over time, if you are buying something like Mobil 1 then you won't have a problem
If the OP deviates from what BMW - who make and extensively test the engine - then hes taking an unecessary risk.
I am completely sure that he can mail order the required correct spec oil without any issue at all.
He is located in Arizona which has quite an extreme climate in summer so adherence to OEM spec is probably especially important.
mcbutler said:I dont agree with that at all - saying one particular property of an engine oil is 'most important' is simply not correct.Zforbes said:nplenzick said:
0w40 has a greater temperature range so therefore as a grade would be superior to 0w30.
When buying oil the most important factor is how it breaks down over time, if you are buying something like Mobil 1 then you won't have a problem
If the OP deviates from what BMW - who make and extensively test the engine - then hes taking an unecessary risk.
I am completely sure that he can mail order the required correct spec oil without any issue at all.
He is located in Arizona which has quite an extreme climate in summer so adherence to OEM spec is probably especially important.
As an oil grade 0w30 or 40 is simply the working temperature range, 0w40 has a greater higher temperature range than the 30, IMO that would benefit in an area like Arizona.
If the oil has a long life rating as suggested by R.E92 then all is good as it is tested and approved by BMW. These can be 0w30, 0w40 & 5w40
Exactly, if the oils viscocity peaked at 30 when 40 is recommended this would be especially critical in high temp environmentsZforbes said:mcbutler said:I dont agree with that at all - saying one particular property of an engine oil is 'most important' is simply not correct.Zforbes said:0w40 has a greater temperature range so therefore as a grade would be superior to 0w30.
When buying oil the most important factor is how it breaks down over time, if you are buying something like Mobil 1 then you won't have a problem
If the OP deviates from what BMW - who make and extensively test the engine - then hes taking an unecessary risk.
I am completely sure that he can mail order the required correct spec oil without any issue at all.
He is located in Arizona which has quite an extreme climate in summer so adherence to OEM spec is probably especially important.
As an oil grade 0w30 or 40 is simply the working temperature range, 0w40 has a greater higher temperature range than the 30, IMO that would benefit in an area like Arizona.
If the oil has a long life rating as suggested by R.E92 then all is good as it is tested and approved by BMW. These can be 0w30, 0w40 & 5w40
mcbutler said:Exactly, if the oils viscocity peaked at 30 when 40 is recommended this would be especially critical in high temp environmentsZforbes said:mcbutler said:
As an oil grade 0w30 or 40 is simply the working temperature range, 0w40 has a greater higher temperature range than the 30, IMO that would benefit in an area like Arizona.
If the oil has a long life rating as suggested by R.E92 then all is good as it is tested and approved by BMW. These can be 0w30, 0w40 & 5w40
I think we agree, op asked is 0w40 was ok if 30 was recommended, obviously it is.
North West Surrey
Zforbes said:
I'd agree with you both!
I bought some Shell Helix Ultra 5W40 in a container that said it complied with BMW LL04 for my 3.0Si, and I believe BMW use Shell now.
In Arizona I think a wider temperature range might be a good idea.
Scottish Borders
San Francisco, CA