|
|
|
|
Joined: Feb 2005
Posts: 76
Shade Tree Mechanic
|
OP
Shade Tree Mechanic
Joined: Feb 2005
Posts: 76 |
I've heard various opnions about using multi weight oil or single weight oil in these old chevy four engines. I have been using 10W40 for several years. I was wondering whether it really makes any difference? Thanks, Maxie.
"Preserving the old fashion way... for the fun of it."
|
|
|
|
|
Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
|
|
ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
10W-30 is great-10W-40 for really hot weather or a loose engine is also good in my opinion.
Gene Schneider
|
|
|
|
|
Joined: Nov 2001
Posts: 19,758 Likes: 64
ChatMaster - 15,000
|
|
ChatMaster - 15,000
Joined: Nov 2001
Posts: 19,758 Likes: 64 |
I agree with Gene. As long as the oil has a low enough viscosity to splash on the cylinder walls and lubricate them and the piston pins all will be hunkie dorie.
How Sweet the roar of a Chevy four!
|
|
|
|
|
Joined: May 2005
Posts: 5
Grease Monkey
|
|
Grease Monkey
Joined: May 2005
Posts: 5 |
I use multigrade in my 28 National I have done for the last three years had no problems to date
chev28
|
|
|
|
|
Joined: Feb 2005
Posts: 76
Shade Tree Mechanic
|
|
OP
Shade Tree Mechanic
Joined: Feb 2005
Posts: 76 |
I have an engine that is loose and had 10W40 in it. When hot, it slaps really bad. I tried 20W50 and it did quiet down a lot and the oil pressure went fro 10-12 to 16-18 when cold and then back to 13-14 when hot. I have wondered if the 20W50 is too thick for a good spraying action when the rods hit the oil troughs...?? O dp have another engine in rebuild now and guess I will try 10W40 with it.
Side Note: I had Kevin Smith (in G&D) mill out a horn button and hub for the center of my '28 Capitol 1 Ton Truck steering wheel. Great job!
It's been a good day at the Closson's!
Thanks, Maxie.
"Preserving the old fashion way... for the fun of it."
|
|
|
|
|
Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
|
|
ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
For a worn out engine the 20W-50 is fine as you have nothing to loose.....but is too heavy for use in a fresh engine.Actually your are safer using an oil that is too "thin" in a good engine.The "thin" oil circulates thru the bearings , etc. faster giving better circulation and cooling.The pressure realy means nothing - only shows that it takes greater force to move the "heavy" oil.
Gene Schneider
|
|
|
|
|
|
|
