Oil-0W-40 or 15w-50 Mobil 1
07-04-2006, 02:25 PM
#2
Racer
Join Date: Sep 2004
Location: Aliso Viejo, CA
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I bought up all that Walmart had (17 quarts). Every time I go in I look for it, because they rarely have it in stock. I am only using 15W-50. 0W-40 could be useful in very cold climates, but in So Cal cold is 40F. Some have reported ticking lifters with the 0W-40 that goes away when using 15W-50. The thinner 0W-40 may not allow enough pressure to be produced at idle (oil temp should be ~9 o'clock and pressure should be ~2 bar). At 2500 rpm pressure should be 5+ bar.
07-04-2006, 02:37 PM
#3
Drifting
Join Date: Apr 2003
Location: la la land | comin' back soon nyc
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fwiw: i think 0w 40... grey cap is what the 'stealer' uses.... but of course charges gold cap+ prices. 
in the past i've have had the 'tic' when runnin' it (start ups in the socal mornings esp.)... when 'cold' -go figure.
no mas por mi.
in the past i've have had the 'tic' when runnin' it (start ups in the socal mornings esp.)... when 'cold' -go figure.
no mas por mi.
07-04-2006, 06:32 PM
#4
Rennlist Member
In lieu of 15W-50, use 5W-50: the '15W' or '5W' refers to the viscosity index when the oil is at ~ ambient temp. When the oil is up to the core temp of a warmed engine, '50' is the operating viscosity.
There is no discernable difference in the two when warm. I think Mobile I is now producing the 5W-50, and Castrol have been doing so for some time.
There is no discernable difference in the two when warm. I think Mobile I is now producing the 5W-50, and Castrol have been doing so for some time.
