food for thought - 5W-30 vis 5W-40 engine oil

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Originally Posted by shanegtr

Sorry Josh, but your statement there is incorrect. The first *w number is related to the oil cold pumpability of the oil (the W stands for winter), the second number is the SAE hot (100deg) viscosity rating so that is what relates to operating temp viscosities not the first number

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Ha ha I think I had one too many blue cans.

The hpr 5 bit is right. It has a better 100degree rating.. I'm actually looking to go to hpr 15 next as I'm at 300k, my new gauge just turned up so I can see what the actual pressures are like before I do something dumb

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my new gauge just turned up so I can see what the actual pressures are like before I do something dumb

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Is this a DIY fit, and can you give some details? its something I'm keen to explore... Where is the sender/probe mounted?
Cheers.

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Originally Posted by josh.huber

Ha ha I think I had one too many blue cans.

The hpr 5 bit is right. It has a better 100degree rating.. I'm actually looking to go to hpr 15 next as I'm at 300k, my new gauge just turned up so I can see what the actual pressures are like before I do something dumb

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I’ve got new bearings. I feel like a virgin being penetrated for the first time. Still using HPR5 5W-40 “extra” 10 though

(Guessing what that feels like, just saying)

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Originally Posted by Jpdv

Is this a DIY fit, and can you give some details? its something I'm keen to explore... Where is the sender/probe mounted?
Cheers.

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Temporary measure, remove the original and put the gauge in. Although I am thinking about a t peice and something full time. So much on the market now, I'd love something wireless I could look at on demand

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Originally Posted by josh.huber

Temporary measure, remove the original and put the gauge in. Although I am thinking about a t peice and something full time. So much on the market now, I'd love something wireless I could look at on demand

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Sender is a switch in the to of the block on a long stem. Single wire rhs while looking at the engine bay.

First round results in. A little scary for me.

HPR 5 cold idle - settled to 20psi pretty quickly. Oil pressure rose nicely with throttle.. But a bit light for me.

https://uploads.tapatalk-cdn.com/202...839df2f383.jpg

HPR 5 at 97 degrees - was about 1500rpm to get the required 14.7psi and about 20psi at 2000rpm. No sense going much higher as I don't really get further up.

https://uploads.tapatalk-cdn.com/202...c57a269222.jpg

Note this is just my car. Been on Castrol c1 Pro for the first 150k then HPR 5 since. 290005 ks on clock now.

I was going to run something thicker but the HTHS has me a little concerned with regards to that bloody crank, as I can find an increase of great for engine wear but not fit fuel, I'm worried that to high of a number will leave to much extra friction between the bearings and the crank, possibly causing a spin. I'll call Penrite on Tuesday and have another yarn I reckon.

I've got plenty of CAT 15-40 here. I'll chuck some in today for ****s and giggles. If nothing else a flush until I get the information I need. I love the idea of the HPR 15 but Its a big jump in HTHS from the HPR10.

https://uploads.tapatalk-cdn.com/202...9ebdb0e476.jpg

For reference the cat oil is HTHS 4.4. so considering that's in mining trucks in not sure I should go higher?

I’m collecting all the bits for the next timing belt change and will definitely change the oil pump as well since it was already changed to the upgraded part last belt change (and vibration damper lower puller as well).

Christian did say the FAI pump was the ‘cheap pump’ so stay with FoMoCo only.

I have a new pump and new bearings from 40k ago. I wonder what mine would be like

I wonder what pressure the piston cooling squirters open up at and what the impact might be of one or more sticking open?

Specs say 10 psi at idle and 27.5 at 3500rpm, so it must be diverting flow to the squirters continuously.