« previous next »
Pages: [1]

Author Topic: Oil. 10/30 vs 10/40 w  (Read 3060 times)

0 Members and 1 Guest are viewing this topic.

BigBlockFE

  • Jr. Member
  • **
  • Posts: 94
    • View Profile
Oil. 10/30 vs 10/40 w
« on: February 11, 2017, 12:10:19 AM »
I have an all aluminum 496 fe. I use brad penn oil. Would you recommend the 10/30 or the 10/40 or does it matter. I do some road racing and auto x  about 70% street 30% racing. I live in Las Vegas.
Logged

TorinoBP88

  • Full Member
  • ***
  • Posts: 109
    • View Profile
Re: Oil. 10/30 vs 10/40 w
« Reply #1 on: February 11, 2017, 03:44:46 AM »
Las Vegas, lighter oil in winter, heavier in summer, it's hot there, but maybe even 20-50 for autocross or road racing.  Do you have an oil cooler?

Logged

BigBlockFE

  • Jr. Member
  • **
  • Posts: 94
    • View Profile
Re: Oil. 10/30 vs 10/40 w
« Reply #2 on: February 11, 2017, 06:09:18 AM »
I have an oil cooler but do not use it.
Logged

jayb

  • Administrator
  • Hero Member
  • *****
  • Posts: 7408
    • View Profile
    • FE Power
Re: Oil. 10/30 vs 10/40 w
« Reply #3 on: February 11, 2017, 10:19:36 AM »
I've been using 10W-30 on just about everything these days, unless the bearing clearances are really large.
Logged
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

BigBlockFE

  • Jr. Member
  • **
  • Posts: 94
    • View Profile
Re: Oil. 10/30 vs 10/40 w
« Reply #4 on: February 11, 2017, 11:43:28 AM »
Thanks jay.
Logged

Joe-JDC

  • Hero Member
  • *****
  • Posts: 1495
  • Truth stands on its own merit.
    • View Profile
Re: Oil. 10/30 vs 10/40 w
« Reply #5 on: February 11, 2017, 12:54:48 PM »
Those heavier oils rob horsepower, and will wear the gear on the camshaft quicker over time.  10-30 is a very good all around oil for modern performance engines.  Joe-JDC
Logged
Joe-JDC '70GT-500

TorinoBP88

  • Full Member
  • ***
  • Posts: 109
    • View Profile
Re: Oil. 10/30 vs 10/40 w
« Reply #6 on: February 11, 2017, 01:06:24 PM »
True, they Rob some power, but if you are beating on an engine, a little extra cushion when hot is peace of mind for me.  That is why Valvoline still makes 50w racing oil for road racing.
Logged
Pages: [1]
« previous next »