Hello folks,
1/ I'd like to have your views on which method you prefer and why?
2/ For those folks that are religious with used oil analysis, does your UOA show up increased metal content when using a suction device to change oil as compared to letting gravity do it's job by opening the drain bolt at the bottom of the sump?
My feeling is that with modern oils(synthetic's like the Castrol TXT LL04 5W30 I use in my BMW 330d (M57N), better filtration systems the days of expecting to find 'gold dust' gathered at your sump bolt/magnet is over. Infact if you are finding that, then you have some serious issue internally. Yet there are some people that believe it is very serious to not get this out the old fashioned way. If thats the case then what do you think about some of the new Mercedes engines that simply do not have a sump drain bolt. It is oil change by suction device exclusively.
Thanks in advance for your facts, opinions, pointers.....
Cheers/Vernon
1/ I'd like to have your views on which method you prefer and why?
2/ For those folks that are religious with used oil analysis, does your UOA show up increased metal content when using a suction device to change oil as compared to letting gravity do it's job by opening the drain bolt at the bottom of the sump?
My feeling is that with modern oils(synthetic's like the Castrol TXT LL04 5W30 I use in my BMW 330d (M57N), better filtration systems the days of expecting to find 'gold dust' gathered at your sump bolt/magnet is over. Infact if you are finding that, then you have some serious issue internally. Yet there are some people that believe it is very serious to not get this out the old fashioned way. If thats the case then what do you think about some of the new Mercedes engines that simply do not have a sump drain bolt. It is oil change by suction device exclusively.
Thanks in advance for your facts, opinions, pointers.....
Cheers/Vernon
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