Mixing oil weights
03-22-2013, 11:27 AM
#1
Instructor
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Mixing oil weights
Laziness not withstanding, I need some opinions on this: 
*Doing an oil change on the C6
*I have 5.5 quarts of Mobil One 5w30 syn
*I have .5 quarts of Mobil One 5w20 syn
Is it really a big deal mix this in such a small quantity? Can't get to the auto parts store for several more hours.
*Doing an oil change on the C6
*I have 5.5 quarts of Mobil One 5w30 syn
*I have .5 quarts of Mobil One 5w20 syn
Is it really a big deal mix this in such a small quantity? Can't get to the auto parts store for several more hours.
03-22-2013, 11:41 AM
#2
In my old beater truck I used to have I wouldn't have had an issue with it, and in your Vette I won't have an issue either...but I wouldn't do it in mine. 
I highly doubt it would hurt anything, but I would wait for the right stuff.
I highly doubt it would hurt anything, but I would wait for the right stuff.
03-22-2013, 11:43 AM
#3
Laziness not withstanding, I need some opinions on this:
*Doing an oil change on the C6
*I have 5.5 quarts of Mobil One 5w30 syn
*I have .5 quarts of Mobil One 5w20 syn
Is it really a big deal mix this in such a small quantity? Can't get to the auto parts store for several more hours.
*Doing an oil change on the C6
*I have 5.5 quarts of Mobil One 5w30 syn
*I have .5 quarts of Mobil One 5w20 syn
Is it really a big deal mix this in such a small quantity? Can't get to the auto parts store for several more hours.
03-22-2013, 05:50 PM
#5
Drifting
Laziness not withstanding, I need some opinions on this:
*Doing an oil change on the C6
*I have 5.5 quarts of Mobil One 5w30 syn
*I have .5 quarts of Mobil One 5w20 syn
Is it really a big deal mix this in such a small quantity? Can't get to the auto parts store for several more hours.
*Doing an oil change on the C6
*I have 5.5 quarts of Mobil One 5w30 syn
*I have .5 quarts of Mobil One 5w20 syn
Is it really a big deal mix this in such a small quantity? Can't get to the auto parts store for several more hours.
03-22-2013, 06:02 PM
#6
Tech Contributor
Seriously? 
Yes, GM will see your post, secretly take oil samples which will prove you deviated from the factory fill and then send you a letter voiding any warranty coverage you may have left. If you do not have a warranty, it will show up in a Carfax report as an incident that will likely catch the attention of the state. The state will then issue you a salvage title.
Cliffs: Won't hurt a thing.
Yes, GM will see your post, secretly take oil samples which will prove you deviated from the factory fill and then send you a letter voiding any warranty coverage you may have left. If you do not have a warranty, it will show up in a Carfax report as an incident that will likely catch the attention of the state. The state will then issue you a salvage title.
Cliffs: Won't hurt a thing.
03-22-2013, 08:51 PM
#10
Race Director
Why bother mixing at all? Put in the 5.5 quarts and then when you have time, pick up another bottle of 5w30 and then top it up. It won't hurt to run it a half quart low for a short period of time.
03-22-2013, 09:18 PM
#11
Drifting
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OMG!!!!........Mobil 1 5w30w syn and Mobil 1 5w20w syn DO NOT MIX.
It's like mixing non-fat milk with maple syrup, or acetone with carnauba wax, or AB Negative blood with Type O.
Whatever you do.....don't do it!!!!!!
Well, that may be a slight exaggeration, well, it may be more than a slight exaggeration, in fact it may be an extremely strong case of stretching the truth, well, to be absolutely honest.........it is completely false.
In actual fact, it won't make a damned bit of difference......go ahead.
It's like mixing non-fat milk with maple syrup, or acetone with carnauba wax, or AB Negative blood with Type O.
Whatever you do.....don't do it!!!!!!
Well, that may be a slight exaggeration, well, it may be more than a slight exaggeration, in fact it may be an extremely strong case of stretching the truth, well, to be absolutely honest.........it is completely false.
In actual fact, it won't make a damned bit of difference......go ahead.
03-23-2013, 06:29 AM
#15
03-23-2013, 07:00 AM
#16
Safety Car
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"OH THE HUMANINTY".....And for those of you that DON'T know ...it's a quote when the HINDENBERG went down in flames. And for those of you who don't know about the HINDENB.......
03-23-2013, 10:23 PM
#20
Drifting
OMG!!!!........Mobil 1 5w30w syn and Mobil 1 5w20w syn DO NOT MIX.
It's like mixing non-fat milk with maple syrup, or acetone with carnauba wax, or AB Negative blood with Type O.
Whatever you do.....don't do it!!!!!!
Well, that may be a slight exaggeration, well, it may be more than a slight exaggeration, in fact it may be an extremely strong case of stretching the truth, well, to be absolutely honest.........it is completely false.
In actual fact, it won't make a damned bit of difference......go ahead.
It's like mixing non-fat milk with maple syrup, or acetone with carnauba wax, or AB Negative blood with Type O.
Whatever you do.....don't do it!!!!!!
Well, that may be a slight exaggeration, well, it may be more than a slight exaggeration, in fact it may be an extremely strong case of stretching the truth, well, to be absolutely honest.........it is completely false.
In actual fact, it won't make a damned bit of difference......go ahead.
what he said......