Jump to content
SAU Community

Recommended Posts

Just a quick story and a question. Recently had a set of standard GTR turbo's steel wheeled and highmounted on my car and my mate changed the oil for me when I wasn't there (he used Penrite HPR 10/50). He had a 550Hp ball bearing Garret fail for no apparent reason, oil flow and pressure was good, with limited K's and no real on boost time cause it was still to be tuned fully, he had used the same oil in his car. He then borrowed a turbo off a local mechanic in the mean time to keep his car running. When I was in there this weekend he took the inlet pipe off the front of the turbo and noticed some excessive play and after pulling it out the bearings where shot but it wasn't blowing smoke, the turbo guy pulled it apart on Monday and the shaft was laquered and had allot of carbon build up. After talking to him he told him he was using penrite HPR and the turbo guy said to stick well clear of it as about 5 years ago he rebuilt allot of turbo's that had been using penrite oils, he said then it was due to a problem with the base oil they use and a lack of additives, but they are able to rebuild the turbo for him.

I ran my turbo's for 3 weeks till i noticed some smoke from the back, got the turbo's inspected and one had failed, scoring the thrust seal and shaft, dont know why this happened as oil pressure and flow is good. I had it fixed and put in what I thought was a good oil Penrite HPR 10/50, ran the turbos for approx 10'ks (4 trips for my wife to the shops and back) and noticed white smoke again. after pulling it all apart again it the other turbine has failed and after talking to the the Turbo guy again he found out what oil I used and gave me the same helpful information, Stick well clear of Penrite HPR. Apparently it crystalzes in the bearing housing of the turbo, laquers the shaft and causes carbon to build up ruins the bearings causing the seal to wear and let oil past, and all this very quickly.

Sorry about the length of my story but now for my question has anyone had this problem or heard of others with it. And he recommended using Castrol GTX3 with some morries oil additive.

Link to comment
https://www.sau.com.au/forums/topic/66729-penrite-oils-anyone-else-had-dramas/
Share on other sites

  • Replies 43
  • Created
  • Last Reply

Top Posters In This Topic

i used penrite in my R34 one run down the track and it was coughing and farting streight away did an oil change all ran smothly from there on in i use shell helix if it's good enough for ferrari's it's good enough for a GTR as for penrite i will never touch the stuff again!

:confused:

I didnt blame the oil as there was plenty else going on which i can attribute the problem too, but a mechanic put this Penrite fluff in my car, and 12 hours later when at Phillip Island the engine spun a bottom end bearing:( The car had an ignition miss at high rpm and a dented sump, i thought these two things were the main cause fo the bearing failure:(

I thought Castrol Formula R was going into my engine as thats what i asked for, and for the next 6 months used, though i have just switched back to my old faithful Mobil 1:)

One thing, if your running plain bearing turbos on what was once a ball bearing turbo'd car, make sure you arent using the same oil lines. Ball bearing turbos have restrictors in their oil lines, somehitng you dont want anywhere near your plain bearing turbos.

But with GTRs beign plain bearing turbos (except R34), and you mentioning that they were high mounted then im gussing they hae new oil lines to suit so that wont have been the problem.

Bugger, good luck with it all

I have also heard horror storied about penrite hpr oils.

also hot fours did a test years ago about what the best oil and i think penrite came in LAST place competing with the others

Royal Purple came in first for engine protection

I have been using Motul turbolite 4100 for the last 30,000 kms and its the best value for money while still offering excellent performance. Even after seeing a drift day and high stress/tempuratures it performs very well.

and it smells nice too :wassup:

I have used penrite in my silvias and it seemed good but i ran the gtr on motul or fuschs.

As a side note the shell helix you buy off the shelf is not the same as used by ferraris and neither is the mobil 1, the stuff off the shelf isnt a proper esther based sythetic thus it isnt the same sh1t!!!!

I ran some castrol on a recommendation (was using Motul) and I cooked it.  Now back to Turbolight with no dramas at all.

how did you cook it? which castrol?

I use forumla R 10w60 same as a lot of other other well looked after GTR's

I can see this turning into another 30page thread on oils...sadly full of misinformation:)

I talk to workshops and they sprout crap/truth to me about this and that. I talk to a Mobil distributer and your right, the oil on the shelf isnt the same as used by McLaren or HRT etcThey use Mobil 1 but a motorpsort grade which is a differetn weight. The oil you need for a road car needs to offer a different type of protection over a quite dramatic / different range of operation.

Statement should read Mobil 1 off the shelf is the oil they use in cars like McLaren/Merecedes SLR, Porsche GT2/996 Twin Turbo etc etc. Another similar grade of Mobil1 is used by McLaren F1 cars etc etc. The fact that Porsche and Mercedes use it is good enough for me, plus it served me well for 100,000kms of thrashing around:)

One thing i should add, since i am not able to get the heavire grade of Mobil 1 anywhere in Victoria, ill be running the Castrol Formula R 10W60, just to make sure that at the slightly higher then std power and high track temps, everything is going to hold together

LOL......and that is just another story from yet another person who cannot state anything for fact:(

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • And finally, the front lower mount. It was doubly weird. Firstly, the lower mount is held in with a bracket that has 3 bolts (it also acts as the steering lock stop), and then a nut on the shock lower mount itself. So, remove the 3x 14mm head bolts , then the 17mm nut that holds the shock in. From there, you can't actually remove the shock from the lower mount bolt (took me a while to work that out....) Sadly I don't have a pic of the other side, but the swaybar mounts to the same bolt that holds the shock in. You need to push that swaybar mount/bolt back so the shock can be pulled out past the lower control arm.  In this pic you can see the bolt partly pushed back, but it had to go further than that to release the shock. Once the shock is out, putting the new one in is "reverse of disassembly". Put the top of the shock through at least one hole and put a nut on loosely to hold it in place. Put the lower end in place and push the swaybar mount / shock bolt back in place, then loosely attach the other 2 top nuts. Bolt the bracket back in place with the 14mm head bolts and finally put the nut onto the lower bolt. Done....you have new suspension on your v37!
    • And now to the front.  No pics of the 3 nuts holding the front struts on, they are easy to spot. Undo 2 and leave the closest one on loosely. Underneath we have to deal with the wiring again, but this time its worse because the plug is behind the guard liner. You'll have to decide how much of the guard liner to remove, I undid the lower liner's top, inside and lower clips, but didn't pull it full off the guard. Same issue undoing the plug as at the rear, you need to firmly push the release clip from below while equally firmly gripping the plug body and pulling it out of  the socket. I used my fancy electrical disconnect pliers to get in there There is also one clip for the wiring, unlike at the rear I could not get behind it so just had to lever it up and out.....not in great condition to re-use in future.
    • Onto the rear lower shock mount. It's worth starting with a decent degrease to remove 10+ years of road grime, and perhaps also spray a penetrating oil on the shock lower nut. Don't forget to include the shock wiring and plug in the clean.... Deal with the wiring first; you need to release 2 clips where the wiring goes into the bracket (use long nose pliers behind the bracket to compress the clip so you can reuse it), and the rubber mount slides out, then release the plug.  I found it very hard to unplug, from underneath you can compress the tab with a screwdriver or similar, and gently but firmly pull the plug out of the socket (regular pliers may help but don't put too much pressure on the plastic. The lower mount is straightforward, 17mm nut and you can pull the shock out. As I wasn't putting a standard shock back in, I gave the car side wiring socket a generous gob of dialectric grease to keep crap out in the future. Putting the new shock in is straightforward, feed it into at least 1 of the bolt holes at the top and reach around to put a nut on it to hold it up. Then put on the other 2 top nuts loosely and put the shock onto the lower mounting bolt (you may need to lift the hub a little if the new shock is shorter). Tighten the lower nut and 3 upper nuts and you are done. In my case the BC Racing shocks came assembled for the fronts, but the rears needed to re-use the factory strut tops. For that you need spring compressors to take the pressure off the top nut (they are compressed enough when the spring can move between the top and bottom spring seats. Then a 17mm ring spanner to undo the nut while using an 8mm open spanner to stop the shaft turning (or, if you are really lucky you might get it off with a rattle gun).
    • You will now be able to lift the parcel shelf trim enough to get to the shock cover bolts; if you need to full remove the parcel shelf trim for some reason you also remove the escutcheons around the rear seat release and you will have to unplug the high stop light wiring from the boot. Next up is removal of the bracket; 6 nuts and a bolt Good news, you've finally got to the strut top! Remove the dust cover and the 3 shock mount nuts (perhaps leave 1 on lightly for now....) Same on the other side, but easier now you've done it all before
    • OK, so a bunch of trim needs to come off to get to the rear shock top mounts. Once the seat is out of the way, the plastic trim needs to come off. Remove 2 clips at the top then slide the trim towards the centre of the car to clear the lower clip Next you need to be able to lift the parcel shelf, which means you need to remove the mid dark trim around the door, and then the upper light trim above the parcel shelf. The mid trim has a clip in the middle to remove first, then lift the lowest trim off the top of the mid trim (unclips). At the top there is a hidden clip on the inner side to release first by pulling inwards, then the main clip releases by pulling the top towards the front of the car. The door seal comes off with the trim, just put them aside. The the lighter upper trim, this is easy to break to top clips so take it carefully. There is a hidden clip towards the bottom and another in the middle to release first by pulling inwards. Once they are out, there are 3 clips along the rear windscreen side of the panel that are hard to get under. This is what the rear of the panel looks like to assist:
×
×
  • Create New...