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#3335754 - 04/07/14 12:13 PM Re: Advantages of straight weight oil [Re: Now]
KCJeep Offline


Registered: 06/30/11
Posts: 4682
Loc: Mahzurrah!
Well I was going to do a run of SAE30 this summer. Now I've been transferred at I will suddenly be extreme short tripping my Jeep. Not thinking that's the scenario for a straight weight.

I dunno maybe it'd be better?
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#3335794 - 04/07/14 01:11 PM Re: Advantages of straight weight oil [Re: Now]
pavelow Offline


Registered: 11/24/09
Posts: 558
Loc: Orange Park, FL
Who uses straight weight oils in 2014? I can't see any use for them except for in lawnmowers and other small engines? lol
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#3335819 - 04/07/14 01:40 PM Re: Advantages of straight weight oil [Re: pavelow]
kschachn Online   content


Registered: 12/26/05
Posts: 2725
Loc: Upper Midwest
I don't even use it for them, I see no excessive consumption on M1 0W-30 so what's the point? Why make it any harder than it needs to be?

Originally Posted By: pavelow
Who uses straight weight oils in 2014? I can't see any use for them except for in lawnmowers and other small engines? lol
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#3336039 - 04/07/14 05:08 PM Re: Advantages of straight weight oil [Re: Now]
hattaresguy Offline


Registered: 06/01/11
Posts: 5223
Loc: CT
I used to use straight weights in lawn mowers but now even the little engines are all calling for 10w30.

Unless its for an old engine or an air compressor straight weights are obsolete.

A lot of the old timers run them in their boats but I don't see what advantage they offer over any of the modern 15w40's. Certainly not cost 15w40's are always cheaper.


Edited by hattaresguy (04/07/14 05:08 PM)

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#3336160 - 04/07/14 07:00 PM Re: Advantages of straight weight oil [Re: Now]
zamadison Offline


Registered: 03/17/09
Posts: 13
Loc: California
I could see a straight weight oil being best in an application where an engine was run continuously for long periods of time and not shut down and restarted very often at all.
Perhaps a generator of some sort?

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#3336227 - 04/07/14 08:06 PM Re: Advantages of straight weight oil [Re: Now]
kschachn Online   content


Registered: 12/26/05
Posts: 2725
Loc: Upper Midwest
Meh, I have an 8kW standby generator (Briggs twin) using 0W-30, and it runs now and then when the power fails. I really don't have to add any oil between changes which is usually twice a year.
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#3337341 - 04/08/14 10:40 PM Re: Advantages of straight weight oil [Re: zamadison]
Ducked Offline


Registered: 10/25/12
Posts: 165
Loc: Taiwan
Originally Posted By: zamadison
I could see a straight weight oil being best in an application where an engine was run continuously for long periods of time and not shut down and restarted very often at all.
Perhaps a generator of some sort?


I could see straight weight oils being best in an application where they never see low temperatures (due to climate or preheat), where the oil is subject to sheer (all applications, but especially motorcycles) where the alleged high startup wear (alleged because although I've seen the numbers quoted a lot, and they are plausible, I've never seen a source for them) is less of an issue due to the above, or due to the use of a prelube system, where the engine sits idle for long periods of time, or where the inferior (?) lubrication of polymeric viscosity modifiers is an issue.

Thats potentially A LOT of applications, but I don't know what the advantages (if any) are ACTUALLY, because I've seen hardly any evidence.

Either way, it's probably out there, but I havn't seen it. A lot of it is probably secret.

Someone on here recently (I thought it was in this thread, but I can't find it) posted a response along the lines of "or do you think multigrades are just a worthless marketing ploy" as if that was inconceivable.

I don't think they're just a marketing ploy, but "worthless marketing ploy" is, in a commercial context, a contradiction, like military intelligence.

If a marketing ploy is effective, it'll be anything but worthless to the people who implement it, regardless of any technical merit.

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