Project 3.6 RS Thread, Best oil for hydraulic lifter 993 motors? Options

[Steve]

My 0-5 bar pressure sender and gauge was pegged on a cold engine. I replaced the gauge with a 0-10 bar sender and matching numeric pressure gauge. I’m seeing around 100 PSI on a cold engine reving the motor around 3500-4K. Some threads on Pelican are saying this is normal. I noticed @sirandy posted the same issue on Pelican. Andy what was the outcome? Did you just live with it or make any changes?
https://forums.pelicanparts.com/911-engine-...l-pressure.html

[Cairo94507]

Hi Steve,
Hope you are doing well and enjoying retirement. On my engine, I typically show 80 PSI when it starts and idles. If I raise the RPMs a bit it will go up, but not to 100. Once warm, it usually does not go over 80. It does appear the 993 motors run more pressure than others for sure. I am running 10W50 Mobil 1. (IMG:style_emoticons/default/beerchug.gif)

[Steve]

Hi Steve,
Hope you are doing well and enjoying retirement. On my engine, I typically show 80 PSI when it starts and idles. If I raise the RPMs a bit it will go up, but not to 100. Once warm, it usually does not go over 80. It does appear the 993 motors run more pressure than others for sure. I am running 10W50 Mobil 1. (IMG:style_emoticons/default/beerchug.gif)

Thanks Michael for the response!! It only gets close to 100 until it warms up, so I baby it until then. Otherwise I am seeing the same as you. I am running Mobil one 15/50 synthetic. Retirement is great. I have never been this relaxed

[Cairo94507]

(IMG:style_emoticons/default/beerchug.gif) (IMG:style_emoticons/default/biggrin.gif)

[Steve]

I replaced the kludgy M30 to AN16 trank adapter with stock 914-6 oil line. What a difference. Should of done this years ago. This fixed the oil leak issue and now its easy to tighten it under the tank.
Curious what engine oil are you running in your 3.6? From the factory they came with Mobil One 15w50. I ran this with my previous 1996 993 and it ran great. Quiet lifters, ran cool, etc. I am currently running this with my 1995 3.6 motor, but some people no longer recommend Mobil One. PCA is recommending Driven or Motul 15w-50. Nice to be able to get Mobil One from my local FLAPS or Walmwart. Is it worth it to special order the other stuff? Porsche also recommends their 10W-60 Oil. Super expensive.

In the 4.0L engine I run Valvoline 20w50. It seems to work great. I started off with Valvoline straight 50 weight, but when it got cold, that oil popped the oil cooler on the scavenge side, so I changed to the 20W50.

@clayperrine curious if you are running conventional/dino vr1 or synthetic vr1?

[Steve]

@mepstein what does your shop use for oil in 993 motors with hydraulic lifters?
What is everyone else using for oil in there 993 motors with hydraulic lifters?
Seems to be all over the place. Some still use Mobil One 15W50 and some use Motil 300V or DT50 and Porsche recommends there over priced 10W60

[Cairo94507]

Steve - I am running Mobil 1 15W50 synthetic in my engine. However, I am open to alternatives if there is something better. Cheers buddy, Michael (IMG:style_emoticons/default/beerchug.gif)

[Steve]

Steve - I am running Mobil 1 15W50 synthetic in my engine. However, I am open to alternatives if there is something better. Cheers buddy, Michael (IMG:style_emoticons/default/beerchug.gif)

Thanks Michael!!
I've been running Mobil 1 15W50 synthetic since I installed this motor. Easy to find and cheap at Walmart. Oil threads are all over the place on recommended oil for our motors. I got a headache reading all of them with Google. (IMG:style_emoticons/default/beerchug.gif)

[mepstein]

@mepstein what does your shop use for oil in 993 motors with hydraulic lifters?
What is everyone else using for oil in there 993 motors with hydraulic lifters?
Seems to be all over the place. Some still use Mobil One 15W50 and some use Motil 300V or DT50 and Porsche recommends there over priced 10W60

My engine guy prefers Brad Penn 20-50 but says if the lifters are having trouble pumping up, to go slightly thinner.

[Root_Werks]

Running Castrol Euro 5w40w non synthetic in both my Mexi-Bug and 914-6 with 993 hydraulic lifters.

(IMG:style_emoticons/default/driving.gif)

[ClayPerrine]

I replaced the kludgy M30 to AN16 trank adapter with stock 914-6 oil line. What a difference. Should of done this years ago. This fixed the oil leak issue and now its easy to tighten it under the tank.
Curious what engine oil are you running in your 3.6? From the factory they came with Mobil One 15w50. I ran this with my previous 1996 993 and it ran great. Quiet lifters, ran cool, etc. I am currently running this with my 1995 3.6 motor, but some people no longer recommend Mobil One. PCA is recommending Driven or Motul 15w-50. Nice to be able to get Mobil One from my local FLAPS or Walmwart. Is it worth it to special order the other stuff? Porsche also recommends their 10W-60 Oil. Super expensive.

In the 4.0L engine I run Valvoline 20w50. It seems to work great. I started off with Valvoline straight 50 weight, but when it got cold, that oil popped the oil cooler on the scavenge side, so I changed to the 20W50.

@clayperrine curious if you are running conventional/dino vr1 or synthetic vr1?

Conventional Dino VR1.