| Oil What are most people using [message #220825] |
Mon, 02 September 2013 02:13  |
jturbo
Messages: 76
Registered: August 2013
Location: Socal
Karma: 1
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Just asking what type brand and weight of oil most people are using.
1978 Royal 403
1977 Birchaven 455
1977 Kingsley 455
All under Upgrading and restoration
Rosemead California
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| Re: Oil What are most people using [message #220839 is a reply to message #220838] |
Mon, 02 September 2013 07:49  |
jknezek
Messages: 1057
Registered: December 2007
Karma: 5
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Unless you have a recently rebuilt engine, run whatever reputable oil you want. Odds are, over the 35-40 year lifetime of your coach, it has run happily on many brands and formulations of oil. If it is still running well, odds are oil isn't going to be your problem...
The most recent reduced zinc additive in oil came about almost 10 years ago, 2004, so unless you or your PO have been doing something special since then, the engine has most likely run happily on current formulations.
Personally, I use a Mobile1 10w40 high mileage synthetic since I use it in my other 100K mile vehicle. It helps me keep only 1 oil in the house and that is just fine by me. I do add cam shield, but I'm almost positive that it is unnecessary in my older broken in engine. And I'm certain my PO did nothing of the sort and the engine is still running well.
You'll get lots of responses, and all I can say about that is if we are using a variety of brands and advocating and doing well with each one, it probably doesn't matter too much which one you go with.
Thanks,
Jeremy Knezek
1976 Glenbrook
Birmingham, AL
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| Re: [GMCnet] Oil What are most people using [message #220851 is a reply to message #220825] |
Mon, 02 September 2013 09:40 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Delo or Rotunda 15-40, whichever is on sale at the time.
--johnny
'76 23' transmode Norris
'76 palm beach
--------------------------------------------
On Mon, 9/2/13, john <tg16jturbo@mac.com> wrote:
Subject: [GMCnet] Oil What are most people using
To: gmclist@temp.gmcnet.org
Date: Monday, September 2, 2013, 7:13 AM
Just asking what type brand and weight of oil most people
are using.
--
1978 Royal 403
1977 Birchaven 455
1977 Kingsley 455
All under Upgrading and restoration
Rosemead California
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: Oil What are most people using [message #220859 is a reply to message #220825] |
Mon, 02 September 2013 10:07 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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| jturbo wrote on Mon, 02 September 2013 00:13 |
Just asking what type brand and weight of oil most people are using.
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Valvoline VR-1 20W50
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: Oil What are most people using - best for you.. [message #220872 is a reply to message #220859] |
Mon, 02 September 2013 10:36 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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There has been a lot of discussion here and there are some serious truisms to handle.
Synthetics don't break down with heat as easily as most dino oil.
- Our engines seldom run into that range unless you are towing and/or mountain climbing. (Or, driving your Cadillac twin turbo at 80MPH.)
Synthetics do form glass-hard deposits in the combustion chamber if the engine is consuming lube oil at much of any rate (like more than 1 quart per K-mile). This is known, but the actual calibration is uncertain. So, if you are headed for a rebuild, stay with dino.
Fact, synthetics are twice or triple the cost of good dino. ROI is still uncertain.
The requirement for extreme pressure anti-wear additive is a know fact in the break-in of a flat tappet engine. The requirement after break-in is uncertain. I have no hard data here, only anecdotal, but I like it.
So,
If you have a broken-in engine, you are pretty safe running any good oil.
If you have an engine that requires frequent lube oil topping off, stay away from synthetics.
If you have an engine that uses little oil and are paranoid, then synthetics are comforting.
Matt - the dyno lab guy
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: Oil What are most people using [message #220945 is a reply to message #220825] |
Mon, 02 September 2013 20:39 |
GMCNUSA
Messages: 283
Registered: August 2006
Location: Indianapolis, IN
Karma: 0
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Senior Member |
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Amsoil Hot Rod oil it has extra ZDDP and anti rust additives for long storage. My engine builder says it is excellent.
Larry Dilk
Indianapolis, IN
76 Eleganza II
Patterson 455,Turbo City TBI,
Just LOVE It!
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| Re: Oil What are most people using [message #220947 is a reply to message #220825] |
Mon, 02 September 2013 20:51 |
Ernest Dankert
Messages: 133
Registered: May 2007
Location: Ogden, New York
Karma: 1
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Amsoil 10-40 signature with amsoil oil and air filters.
Also amsoil transmission and gear oil for differential.
Amsoil chassis grease for bearings and bogies.
1977 Eleganza II
Ogden NY
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