what weight oil?
Thread Starter
Drifting
Joined: Dec 1999
Posts: 1,330
Likes: 36
From: Waynesboro, PA
Co-winner 2020 C4 of the Year - Modified
what weight oil?
What weight (and brand) oil are you guys using in your blower cars? Specifically the ones with built motors. How about Mobil 1 synthetic 15w50?
Drifting
Joined: Jul 2001
Posts: 1,897
Likes: 0
From: La Fontaine Indiana
Re: what weight oil? (POLOVETTE 94)
I thought you would get a lot of replies and all of them recommending Mobil-1
The smartest thing that Mobil ever did was offer GM free oil because when people buy a vette they think that if GM put it in at the factory it has to be the best. Not that there is anything wrong with that but it is all about Money if they had got a better deal on another brand then that is what would be in it from the factory. With a blower motor you will have extreme loading on the bearings so your are on the right track as far as viscosity. But if the oil film don't keep the bearings from making contact with the crank like at start up then Zinc is your last line of defense Mobil-1 has NO Zinc.
I use 5w-50 Sytec it has Zinc. If you don't know one reason some oil has low or no zinc is it is believed that over time zinc in the oil can degrade the catalytic converter. I don't need to worry about that if you know what I mean :D
Here is a couple web sites you may want to go to. Lot of reading so enjoy. http://www.bobistheoilguy.com when you get their after reading that site click on links and you will find a lot more good sites. Also check out this site http://www.machinerylubrication.com. I know I will need my flack suit on for suggesting that you consider anything other than Mobil-1 :banghead:
GOOD LUCK WITH YOUR DECISION
EDIT I just checked and it appears that since the last time that I checked Mobil has changed their oil. If you look up the MSDS sheet they claim that in the TRI-SYNTHETIC 15W-50 it has Zinc Dithiophosphate.
I would not have a problem with using this oil :thumbs:
[Modified by black bart, 8:22 AM 8/20/2003]
The smartest thing that Mobil ever did was offer GM free oil because when people buy a vette they think that if GM put it in at the factory it has to be the best. Not that there is anything wrong with that but it is all about Money if they had got a better deal on another brand then that is what would be in it from the factory. With a blower motor you will have extreme loading on the bearings so your are on the right track as far as viscosity. But if the oil film don't keep the bearings from making contact with the crank like at start up then Zinc is your last line of defense Mobil-1 has NO Zinc.
I use 5w-50 Sytec it has Zinc. If you don't know one reason some oil has low or no zinc is it is believed that over time zinc in the oil can degrade the catalytic converter. I don't need to worry about that if you know what I mean :D
Here is a couple web sites you may want to go to. Lot of reading so enjoy. http://www.bobistheoilguy.com when you get their after reading that site click on links and you will find a lot more good sites. Also check out this site http://www.machinerylubrication.com. I know I will need my flack suit on for suggesting that you consider anything other than Mobil-1 :banghead:
GOOD LUCK WITH YOUR DECISION
EDIT I just checked and it appears that since the last time that I checked Mobil has changed their oil. If you look up the MSDS sheet they claim that in the TRI-SYNTHETIC 15W-50 it has Zinc Dithiophosphate.
I would not have a problem with using this oil :thumbs:
[Modified by black bart, 8:22 AM 8/20/2003]
Thread Starter
Drifting
Joined: Dec 1999
Posts: 1,330
Likes: 36
From: Waynesboro, PA
Co-winner 2020 C4 of the Year - Modified
Re: what weight oil? (black bart)
Great, because the local WalMart has 5 quart jugs of Mobil 1 15w50 for $18.88! I guess I'll stock up now, as I will be needing it in a couple months. ;) ;)
Thanks for the "high tech" advice. I agree, I thought many others would post Mobil 1, just because of the factory fill or brand name reasons.
Darren
Thanks for the "high tech" advice. I agree, I thought many others would post Mobil 1, just because of the factory fill or brand name reasons.
Darren
Pro
Joined: Mar 2002
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Re: what weight oil? (POLOVETTE 94)
i ran 15w50 mobil synthetic for the first 170,000 miles in my vette, after the rebuild (i just wanted more horsepower) my mechanic told me to use a lighter weight oil - because he said the motor was real "tight" and extra holes were added for extra lubrication, so now its 10w30 mobil synthetic. well, 196,000 miles and it hasn't exploded yet! oooops! no blower/supercharger on this motor, just an extra 100 shot of laughing gas!
