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- Jun 3, 2021
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- 818
ElaborateIn my camp, the best motor oil is free, hello FCP euro.
ElaborateIn my camp, the best motor oil is free, hello FCP euro.
Elaborate
Shell will not warranty the performance of their oil beyond the OEM interval, while Mobil and Castrol both will for up to 20,000 miles as long as that is accrued within a 12 month period:So just the marketing but no actual data?
It's typically fuel dilution that drives the viscosity loss (as I pointed out earlier) which the 10W-30 is just as susceptible to.2) Mobil 1 10W30 EP instead of 5W30, in an effort to end up with a 30wt oil, instead of a 20wt, at the interval’s end.
Great, more marketing department warranty crap. Still no data.Shell will not warranty the performance of their oil beyond the OEM interval, while Mobil and Castrol both will for up to 20,000 miles as long as that is accrued within a 12 month period:
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It's as simple as Shell won't stand behind their oil being used beyond the OEM change interval, while the other two will. Yes, there's definitely a marketing angle to it, but if somebody plans to go that route, the confidence would be much higher with one of the two that advertises they will stand behind that capability rather than one that clearly won't cover it.Great, more marketing department warranty crap. Still no data.
This forum loves leaning on these silly oil warranties.
To the bold phrase, we don't know why that is though. It could be because the oil is not as stout, or it could simply be Shell has a more conservative legal team that has shied away from taking on any liability that comes with that marketing, or that Shell doesn't want to bother because their market research suggests customers won't not buy the oil because of that lack of phrasing. So to your second point about generalizations, yes.It's as simple as Shell won't stand behind their oil being used beyond the OEM change interval, while the other two will. Yes, there's definitely a marketing angle to it, but if somebody plans to go that route, the confidence would be much higher with one of the two that advertises they will stand behind that capability rather than one that clearly won't cover it.
Beyond that, each application is different so there's no hard-fast rule that dictates just how long the oil will be safe to use. You'd have to use UOA's in your own specific usage profile to find that out and that's beyond the scope of the generalities that you and I are discussing here.
You really have a problem with that don’t you?Great, more marketing department warranty crap. Still no data.
This forum loves leaning on these silly oil warranties.
I think it's ridiculous that people here, on a site that's very data driven, actually think there's merit to what the marketing department agreed on. Very gullible.You really have a problem with that don’t you?
Yeah it does seem as though it’s a particular issue with you. Well, stick to facts I guess rather than “crap” as you put it.I think it's ridiculous that people here, on a site that's very data driven, actually think there's merit to what the marketing department agreed on. Very gullible.
It isn't "deep cynicism", it's a grain of common sense.Yeah it does seem as though it’s a particular issue with you. Well, stick to facts I guess rather than “crap” as you put it.
Have you ever had a verifiable oil-related failure that a blender or manufacturer refused to cover under a warranty? Just wondering where this deep cynicism came from.
Ahh yeah. Got it.It isn't "deep cynicism", it's a grain of common sense.
I wouldn't do extended drains on any GDI engine, doesn't matter how good the oil is soot is bad for your timing chains.Ever think about Castrol (GTX) Magnatec 5W30? A LOT of EB operators swear by it, and the price is generally good too. Think I wouldn’t go too far beyond 5-6000 mile OCIs, though.
That is an interesting note. Is there any documentation about soot being bad? Coming from the heavy diesel world, I'm used to it being a normal fact of life.I wouldn't do extended drains on any GDI engine, doesn't matter how good the oil is soot is bad for your timing chains.
That is an interesting note. Is there any documentation about soot being bad? Coming from the heavy diesel world, I'm used to it being a normal fact of life.
Careful. You have another agitator on the hook.It's as simple as Shell won't stand behind their oil being used beyond the OEM change interval, while the other two will. Yes, there's definitely a marketing angle to it, but if somebody plans to go that route, the confidence would be much higher with one of the two that advertises they will stand behind that capability rather than one that clearly won't cover it.
Beyond that, each application is different so there's no hard-fast rule that dictates just how long the oil will be safe to use. You'd have to use UOA's in your own specific usage profile to find that out and that's beyond the scope of the generalities that you and I are discussing here.
If we look at this objectively, both Mobil and Castrol, because they ARE claiming their product will do 20,000 mile intervals, are going to have additive packages that are robust enough to handle that interval. Shell doesn't need to go that hard because they don't make that claim. This will affect how the oils are blended. It doesn't mean there won't be outliers that will kill one of the 20,000 mile oils early though. Those Honda fuel diluting 1.5L engines are one that immediately comes to mind.