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Oil viscosity mixing, 10w30, 5w30 motor oil; any harm to engine?
Topic Started: Oct 11 2010, 06:50 PM (4,000 Views)
Metro_caon
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[ *  *  *  *  * ]
Not that I've done it :whistle , but what harm would it do if you mixed 10w30 and 5w30 when changing your motor oil? What about mixing one third of 10w30, one third of 5w30 and one third of 10w40?
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mcmancuso
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it will just average out the weights I believe, they will mix fine. Don't put 10W40 in your metro, stick to 30W in winter use 0W30 if you're in a cold area.
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nerys
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Grr

none at all. Thinner is better but a little thicker mixed in will do no harm at all.
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mwebb
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FOG

metro50
Oct 11 2010, 06:50 PM
Not that I've done it :whistle , but what harm would it do if you mixed 10w30 and 5w30 when changing your motor oil? What about mixing one third of 10w30, one third of 5w30 and one third of 10w40?
there is a slight possibility that different types of oil may react and cause problems
is it worth the price of your engine to save the $24.oo dollars it costs to buy
4 quarts of ACEA A3 B3 - A4 B4 Castrol GC 0w30 on sale at AutoJoke today ?
this oil is good for 6k miles MINIMUM in a Geo Metro -

so $24.oo for 6k miles plus a filter ..... such a deal , who should ask more than that ?
" not i " said the little green pig .
======================
use the other oil in your lawn mower or light the barbeque with it or just dump it in your heating oil tank , the furnace will not know the difference when mixed with the other 250 gallons of fuel oil .
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nerys
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Grr

AHA we finally get a product to buy

Castrol GC 0w30
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mwebb
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nerys
Oct 11 2010, 10:34 PM
AHA we finally get a product to buy

Castrol GC 0w30
i gave you a whole page of products to buy about a week ago ....

you were not paying attention ,
pbbbt.
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nerys
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Grr

I must have missed the post. Got a link?
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KY Metro
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mwebb
Oct 11 2010, 10:41 PM
i gave you a whole page of products to buy about a week ago ....

you were not paying attention ,
pbbbt.
Ummm, really? Here's some, er.... empirical data.

Mwebb's Posts in October

From there, I found these 'oil related posts'

http://geometroforum.com/single/?p=350555&t=3832283

http://geometroforum.com/single/?p=352986&t=3842939

http://geometroforum.com/single/?p=353486&t=3844740


None mention specific products to buy.



maybe i missed something ,

maybe


Edited by KY Metro, Oct 12 2010, 06:24 PM.
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mwebb
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FOG

KY Metro
Oct 12 2010, 06:23 PM
mwebb
Oct 11 2010, 10:41 PM
i gave you a whole page of products to buy about a week ago ....

you were not paying attention ,
pbbbt.
Ummm, really? Here's some, er.... empirical data.

Mwebb's Posts in October

From there, I found these 'oil related posts'

http://geometroforum.com/single/?p=350555&t=3832283

http://geometroforum.com/single/?p=352986&t=3842939

http://geometroforum.com/single/?p=353486&t=3844740


None mention specific products to buy.



maybe i missed something ,

maybe


aye laddie , then ya must be blind in yer good eye.
http://geometroforum.com/topic/3781291/2/

as spoken by my daughter in times past
"whatever"

none of us are getting any younger
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nerys
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Grr

ahh saved that link now :-) I think I have a tiny oil leak somewhere (I have to add a tiny bit of oil now and then but see no visible leakage) once I track that down will switch to synthetic.
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Bad Bent
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Facetious Educated Donkey

nerys
Oct 13 2010, 12:55 AM
I think I have a tiny oil leak somewhere (I have to add a tiny bit of oil now and then but see no visible leakage) once I track that down will switch to synthetic.
Conventional thinking says: switch to synthetic now and the tiny leak will erupt into a full blown gusher and then you won't have any trouble at all finding it. :whistle

Oh, and the dirtier your oil is the easier it will be to find on a clean engine. Black sludge, just before it goes solid, shows up great on any half way clean engine. :lol

"none of us are getting any younger" You are only young once but you can be immature your whole life. :lol

On a serious note I have mixed the same brand oils but slightly different weights in an engine without serious side effects, that I know of.
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nerys
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Grr

I keep my engine as spotless as I can (I HATE turning black when I work on my car) just can't seem to find it but I know its their somewhere.
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mwebb
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nerys
Oct 13 2010, 10:24 PM
I keep my engine as spotless as I can (I HATE turning black when I work on my car) just can't seem to find it but I know its their somewhere.
if you do not see a leak
yet
you are needing to add oil to maintain the correct oil level ...
then
your engine is putting the oil into the exhaust stream .

if your PCV is functioning as designed ...

remove your spark plugs and look for what appears to be fluffy grey deposits on the electrodes ,
which are evidence of oil consumption .

caused by frozen oil rings which is a direct result of
using dogshnit oil , as opposed to the CORRECT synthetic oil , an oil that is specifically designed and engineered to reduce / prevent deposits in the piston ring grooves and EGR and anywhere else inside the engine .

if you have frozen oil rings AND good compression and good vacuum values
you may i repeat may be able to free up the frozen rings using suitable solvents allowed to soak into the deposits from the top
(MMO)

http://www.autospeed.com/cms/A_112129/article.html

oops
meant to post this one
http://www.imakenews.com/lng/e_article001902726.cfm?x=bhwW5Jd,bd2RrwPK,w

"they" are going to be spending big bucks to design an oil that will reduce pre ignition knock , ping.... which means
some oils can INcrease that which "they" will be attempting to reduce
Edited by mwebb, Oct 13 2010, 11:13 PM.
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nerys
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Grr

nah first thing I checked. Plugs are clean PCV is clean air cleaner is clean and tail pipe is clean so its not "likely" its burning it but I guess its possible.
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