ttforcefed
Full Access Member
- Joined
- Dec 19, 2010
- Posts
- 649
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ive been using amsoil or liqui moly 5w-40
Thoughts on switching from 5w20 to 5w40 as miles approach 200K?
- Thread starter ttforcefed
- Start date
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itsaguything
Full Access Member
For your entertainment… especially the part where 0w-16 showed less wear than 0w-30. Go figure…
itsaguything
Full Access Member
I was thinking about this situation that many think a thicker oil would be better, as I was looking at the 5w-20 option from Castrol for high mileage vehicles.
It has me thinking (a dangerous and rare thing).
As some claim that the only reason manufacturers have gone to thinner oils is for fuel economy AND fuel economy is driven be efficiencies, does it not follow that there is less friction in the engine, therefore less engine wear by keeping to these lighter weight oils?
Also, a majority of engine wear occurs at startup and at idle. In one case, oil starvation. The latter, when oil pressure is low…. another case of starvation? What’s interesting is that at idle, rpms are low; thus many would wrongly assume engine wear at low rpm is minimal.
The obvious, engines today are made to much finer tolerances than the engines of yesterday seems to be missed by some. finer tolerances = much smaller gaps.
So, I’m going to keep to what the engineers suggest for their product until the utopia of snake oil becomes approved.
It has me thinking (a dangerous and rare thing).
As some claim that the only reason manufacturers have gone to thinner oils is for fuel economy AND fuel economy is driven be efficiencies, does it not follow that there is less friction in the engine, therefore less engine wear by keeping to these lighter weight oils?
Also, a majority of engine wear occurs at startup and at idle. In one case, oil starvation. The latter, when oil pressure is low…. another case of starvation? What’s interesting is that at idle, rpms are low; thus many would wrongly assume engine wear at low rpm is minimal.
The obvious, engines today are made to much finer tolerances than the engines of yesterday seems to be missed by some. finer tolerances = much smaller gaps.
So, I’m going to keep to what the engineers suggest for their product until the utopia of snake oil becomes approved.
powershift
Full Access Member
Oil change frequency and oil level is what you want to pay attention to, not changing the oil weight. I'm targeting 7,500 mi using Mobil 1 but some people change it much sooner at 5k mi. After shutting the engine off I set an alarm for 10 minutes and ensure the oil level is full.
itsaguything
Full Access Member
Agreed. I change mine at 5000km intervals.
Cheers!
Cheers!
