oil weights (Summer)
Master
Joined: Nov 2004
Posts: 2,517
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From: California
I think its available in 10w50 and 20w50 for hotter climates. Not sure about 5w50, i believe im using Valvoline.
Originally Posted by HoldThisForMe
Not exactly sure myself. I'll look when I get back to the house
Castrol makes a 5w-50 full synthetic.
http://www.partsamerica.com/ProductL...gorycode=4019J
Motorcraft and Mobil 1 both make it as well. I'm sure there are others.
http://www.partsamerica.com/ProductL...gorycode=4019J
Motorcraft and Mobil 1 both make it as well. I'm sure there are others.
Registered User
Joined: May 2006
Posts: 402
Likes: 0
From: Sydney, Australia
Originally Posted by theking
Having a thick oil doesn't imply less lubrication at all. If you want to stand on your soap box make sure you didn't place it in quick sand. People in hot climates have their oils heat up much faster and the only time the weight really matters(ie could hurt your engine) is when it is dead cold. It's not about overheating the oil it's about having the most protection and a 20w-50 at full temp will outprotect a 5w-30 any day of the week. Actually a dyno(conventional) oil at 20w-50 will outdue most syth 5w-30's in long term radioactive wear tests. One of the guys that I ride with(motorcycles) that is all he does for diesel companies.
thicker oil flows a higher pressure, and thinner oil flows a higher volumn. Choose an oil that meets the engineers requirements at various operating ranges, and u have the correct oil for ur application.
Coldstart to me is an important cycle. I coldstart my engine 3-4 times a day. For race only conditions i would defaintly look into different weights, but temps can be managed much more reliably though an oil cooler, while retaining engineers original flow and pressure requirements.
Oh, and this is IMO
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