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Old 05-12-2020, 04:13 AM   #8
jsceash
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Quote:
Originally Posted by piper6909 View Post
Not to hijack the thread, but I've been reading from a lot of people that use 5w-40, but nowhere in the manual does it specify 5w-40. Maybe 5w-30 for lower temps, but everything else is 10, 15, or 20 and W-30, 40 or 50.



I've been using Mobil1 10w40 full synthetic, because I'll never drive it when temps are below 14F, I may sometimes drive it when it's below 50, and most often drive it when it's above 50F.

Could someone explain the thought behind using 5w-40 when it's not spec'd in the manual? Obviously since so many people are using it, there must be some reason that I'm missing. School me, please!
Yes your right. I guess My Oil preference comes from LN recommendation for the block update they do with nickies. Mobil may not make those blends any longer. except the extra mileage formula.
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2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
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