Also from 540Ratblog:
7. 5W20 Quaker State Ultimate Durability, API SN, GM dexos 1 approved, synthetic (gold bottle) = 121,396 psi
zinc = TBD
phos = TBD
moly = TBD
This oil was tested Fall 2015. The psi value of this oil, which came from testing it at the normal operating test temperature of...
From 540Ratblog. Enjoy.
SECTION 2 – MOTOR OIL VISCOSITY SELECTION
THE BENEFITS OF USING THINNER OIL:
• Thinner oil flows quicker at cold start-up to begin lubricating critical engine components much more quickly than thicker oil can. Most engine wear takes place during cold start-up before...
Yes, more flow provides better cooling. Higher viscosity flows less. Viscosity does not provide better protection unless the engine is designed for it, i.e. a larger bearing journal clearance.
There is an incompressible wedge of oil in the bearing journals - a higher viscosity oil does not...
I couldn't get the CGLock to "bite" on the Mustangs seat belt buckle. It kept slipping off, so I returned them and went with the Schroth Quick Fit harnesses. Love the Schroth units.
Did it occur to you that perhaps they found that 5w50 in these engines caused a problem? Are you sure that it didn't?
It's a fact that as long as internal clearances and other internal engine systems support a thinner oil, it will flow better and cool better. Do some research please.
I run Quaker State Ultimate 5w20. I've run 4 track days with this and the oil temp stays out of the yellow. Read 540Ratblog, try to read all of the information there and not just the oil ratings. You'll see why a thinner oil is better.
Don't try to outsmart the engineers that specify a...
He's not kidding about drilling through the bumper supports. That is some serious HIGH strength steel. Multiple drill bits, lots of swearing, and shoulder bursitis for a week after I did the rear install.
Nice product though!!
Problem solved. It is the Steeda billet shock mount rattling.
I switched the shocks left to right, and now the noise is coming from the left rear. When I had the shocks off there is noticeably less tension on the noisy spherical bearing, hence the rattle.
Everything is torqued correctly...
Well, toe link and sway bar link did not fix. I'll try swapping the Steeda rear shocks and billet mounts left to right to see if the noise switches sides. PIA.
Thanks jbailer.
I did do a thorough inspection with a mirror and flashlight while under the car looking for witness marks. I actually stared at the various bushings for quite a while. You know that is- sometimes these things are not evident at a glance.
It could indeed be a diff bushing, but...