SAE 40 or 20W-50 Valvoline racing oil?
#343913
06/11/09 10:09 AM
06/11/09 10:09 AM
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Joined: Jan 2003
Posts: 5,270 Missouri
MY340
OP
master
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OP
master
Joined: Jan 2003
Posts: 5,270
Missouri
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Which one for my 360 which will only see street use and not be driven in cold weather? Any differences or is it pretty much a tossup? I prefer this brand oil due to it's higher levels of ZDDP. TIA
1970 FE5 Duster 360/904/3.91's SOLD
1973 TB3 SpaceDuster 340/4spd/4.10's SOLD
Moparless for now but when the opportunity is right I'll have another one.
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Re: SAE 40 or 20W-50 Valvoline racing oil?
[Re: Mr. T]
#343917
06/11/09 11:32 AM
06/11/09 11:32 AM
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Joined: Feb 2003
Posts: 10,214 Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,214
Someplace you aren't
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Don't run the heavy goop.
run the 20-50 or order something like 10-40 like was said.
I want my fair share
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Re: SAE 40 or 20W-50 Valvoline racing oil?
[Re: MoparforLife]
#343924
06/11/09 08:49 PM
06/11/09 08:49 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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I would NOT use anything that has the numbers 40 or 50 in a tsreet engine.
Any so called engine builder still building street motors with clearances so loose you HAVE to run thick oil is not an engine builder IMO but an engine butcher.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: SAE 40 or 20W-50 Valvoline racing oil?
[Re: Supercuda]
#343925
06/11/09 09:04 PM
06/11/09 09:04 PM
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Joined: Jan 2003
Posts: 3,967 S.I. N.Y.
1MYTGTX
master
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master
Joined: Jan 2003
Posts: 3,967
S.I. N.Y.
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FWIW I just used the 20w-50 VR-1 in my 440....I was running Rotella 15w-40 in it since it was rebuilt about 6k miles ago.... Switched because of the better Zinc levels in this stuff
1MYTGTX
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Re: SAE 40 or 20W-50 Valvoline racing oil?
[Re: Mr. T]
#343929
06/12/09 09:36 AM
06/12/09 09:36 AM
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Joined: Dec 2003
Posts: 5,314 Carstairs, Alberta, Canada
dave571
master
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master
Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
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Quote:
If your engine was built with close tolerances,why would you want to use such a thick oil? Especially on an engine that will mainly see low R.P.M.'s.
Even factory tollerences should only require 10w 30 or 10w40.
20w 50 is too thick in a fresh motor
As for straight weight's(sae 40, etc..) they are for lawn mowers, given the availability of much better modern stuff.
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Re: SAE 40 or 20W-50 Valvoline racing oil?
[Re: dave571]
#343930
06/12/09 11:31 AM
06/12/09 11:31 AM
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Joined: Jan 2003
Posts: 9,436 Blair County,PA
62maxwgn
master
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master
Joined: Jan 2003
Posts: 9,436
Blair County,PA
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Quote:
Quote:
If your engine was built with close tolerances,why would you want to use such a thick oil? Especially on an engine that will mainly see low R.P.M.'s.
Even factory tollerences should only require 10w 30 or 10w40.
20w 50 is too thick in a fresh motor
As for straight weight's(sae 40, etc..) they are for lawn mowers, given the availability of much better modern stuff.
If you ask 20 different people,you'll get 20 different answers.Anyone ever read an owners manual?
Also,as far as zinc content is concerned,everyone will tell you theirs is best.Do what I did with Brad Penn,pay to have an analysis done then you will know.
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