Engine Oil ??
- Thread starter Andy 944
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vitesse
Active member
No offence to Opie(from whom I've bought synthetic oil for the BMW & synthetic gearbox oil for the 2 924S's) but I use ECP's QX brand 10 /40 semisynthetic for the 2 924 engines -one of which gets some trackday/sprint usage but overall low annual miles having bought a 25 litre drum for a bargain sale price & still plenty left.
Oil pressures in both at top of gauge although when very hot ,the track car drops on idle but immediately back up with revs,stays pretty clean & very little consumption considering both well over 100k miles & original engines at 35/36 yrs old.
Always use Porsche OE filter.
Oil pressures in both at top of gauge although when very hot ,the track car drops on idle but immediately back up with revs,stays pretty clean & very little consumption considering both well over 100k miles & original engines at 35/36 yrs old.
Always use Porsche OE filter.
I always used to use 10/40 oil. I had a N/A originally, a turbo for the last 17 years. After my engine re-build 9 years ago I swapped to 10-50 oil. I use millers oils, I'm sure any 10-50 would be just as good, but everyone will have their preferences. My reasoning, I was never happy with the low oil pressure when hot at idle (in both the turbo and N/A), both with over 100k clocked. 10-50 millers improves that for me. I originally thought it was oil pump and worn out engines, the rebuild killed that theory.
924Srr27l
New member
PhilKent said:
The Millers only do a Fully Synthetic then, all you did was change (Increase) the HOT Viscosity rating up from 40 to 50 hence why
the thicker film had a higher oil pressure when hot.
Did your rebuild include a Alusil hone / new pistons etc.. ?
Did you run the engine in with Running in Oil ? then Mineral for a few thousand miles before using the synth?
R
In this thread I posted data from the handbook,
What Oil do you use? | Porsche Forum from Porsche Club GB
I live in the warm South so -10C is extremely rare - used mobil 1 15w40 and then fuchs Pro R 20w50 excellent oil pressure even on hot trackdays and much less consumption than with 10/40 or 0/40. 10/50 seemed to break down faster but no doubt improved now. Also used the millers synthetic 10-50 as relatively inexpensive.
Currently using petronas synthetic 10w40 in the cab which has much lower miles and is doing less than 1000 miles a year so not really putting any strain on oil!
Tony
What Oil do you use? | Porsche Forum from Porsche Club GB
I live in the warm South so -10C is extremely rare - used mobil 1 15w40 and then fuchs Pro R 20w50 excellent oil pressure even on hot trackdays and much less consumption than with 10/40 or 0/40. 10/50 seemed to break down faster but no doubt improved now. Also used the millers synthetic 10-50 as relatively inexpensive.
Currently using petronas synthetic 10w40 in the cab which has much lower miles and is doing less than 1000 miles a year so not really putting any strain on oil!
Tony
blade7
Well-known member
Around 12 years ago when I was looking for an engine oil with high levels of ZDDP, it turned out VR1 didn't have quite as much as some people thought. Whether Valvoline had reduced the ZDDP I don't know, but I'm fairly certain Millers 15w50 CFS had more. You pays your money, and makes your choice. I'm not taking oil advice from a wheel polisher, when it comes to my turbochargers bearings though.Eldavo said:924Srr27l said:
Here you go Roger, you might want to print this one out and frame it because . . .
I AGREE![[sm=kiss.gif]](/forum/styles/default/pcgb/kiss.gif "Kiss [sm=kiss.gif]")
924Srr27l
New member
blade7 said:Around 12 years ago when I was looking for an engine oil with high levels of ZDDP, it turned out VR1 didn't have quite as much as some people thought. Whether Valvoline had reduced the ZDDP I don't know, but I'm fairly certain Millers 15w50 CFS had more. You pays your money, and makes your choice. I'm not taking oil advice from a wheel polisher, when it comes to my turbochargers bearings though.Eldavo said:924Srr27l said:
Here you go Roger, you might want to print this one out and frame it because . . .
I AGREE
It probably hasn't (Valvoline got high ZDDP) content, Lindsey Racing told me to use a Mineral low-mid detergent old skool Oil once the MILLERS Mineral "running in" Oil had done it's job for 100 miles
for 3000 miles I used a MOTUL product Mineral classic 20W 50 (After 1950)
Only after the 3000 road miles did I go Semi Syth with Joe Gibbs XP5 20W50 Racing Oil which also has a ZDDP package, which gets changed after every 2.5 hours Race weekend event.
R
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