TT350 Posted October 22, 2016 Share Posted October 22, 2016 Hi guys. Anyone recommend a specific oil for a turbo Z? When I get mibe back on the road I'm going to pay particular attention to oil levels and quality. Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted October 22, 2016 Share Posted October 22, 2016 Pretty much all modern oils are up to the job, i would use a fully or semi synthetic 10W40. 1 Quote Link to comment Share on other sites More sharing options...
TT350 Posted October 22, 2016 Author Share Posted October 22, 2016 Thanks Tricky. Quote Link to comment Share on other sites More sharing options...
Richf Posted October 23, 2016 Share Posted October 23, 2016 Fuchs Titan 5w40 is what H-Dev recommend for FI zeds http://www.opieoils.co.uk/p-68897-fuchs-titan-race-pro-s-5w-40-ester-fully-synthetic-engine-oil.aspx 1 Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted October 23, 2016 Share Posted October 23, 2016 For my 350 TT, I use Motul Competition 15W50 300V for road and track. For heavy track use I use Motul Competition 20W60 300V Le Mans. Quote Link to comment Share on other sites More sharing options...
Kev T Posted October 23, 2016 Share Posted October 23, 2016 I use Gulf Competition 5w-40 in the Supercharged Growler. Quote Link to comment Share on other sites More sharing options...
Snjur Posted October 23, 2016 Share Posted October 23, 2016 Hi guys. Anyone recommend a specific oil for a turbo Z? When I get mibe back on the road I'm going to pay particular attention to oil levels and quality. Fuchs Titan Pro S 10W60. Sent from my SM-G850F using Tapatalk Quote Link to comment Share on other sites More sharing options...
nissanman312 Posted October 23, 2016 Share Posted October 23, 2016 I used to use motul 300v 5w 30 Quote Link to comment Share on other sites More sharing options...
evilscorp Posted October 23, 2016 Share Posted October 23, 2016 It depends what clearances your bearings have been built with, if you run big gaps I would use a thicker oil, if it's standard I would use 5w-40. But everyone has their own preferences. Quote Link to comment Share on other sites More sharing options...
nissanman312 Posted October 23, 2016 Share Posted October 23, 2016 I used to use motul 300v 5w 30 Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted October 23, 2016 Share Posted October 23, 2016 I always tend to not go too thick with oil, although some people do use bigger clearances (usually track or race motors), you also have to remember that things like oil pumps and there pressure relief valves have been designed and built to run the manufactures recommended oil grade, Therefore you can run into problems as vastly thicker oil will not only apply more strain to oil pump gears, it can also mean that the PRV is always open, which is not a good thing, there is also the increased drag from pushing higher pressures due to oil thickness. For me one or perhaps two grades above std on a highly stressed motor (IE turbocharged) is the limit. Quote Link to comment Share on other sites More sharing options...
TT350 Posted October 23, 2016 Author Share Posted October 23, 2016 (edited) Wow so many varying opinions!! I'm sure oil type/level contributed to my bottom end sh1tting a brick. Edited October 23, 2016 by TT350 Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted October 23, 2016 Share Posted October 23, 2016 Wow so many varying opinions!! I'm sure oil type/level contributed to my bottom end sh1tting a brick. It would definitely be down to oil level...or lack of it. Quote Link to comment Share on other sites More sharing options...
Snjur Posted October 23, 2016 Share Posted October 23, 2016 (edited) Yes but bare in mind that with FI operational temperature of oil pushed on limit. More temperature less pressure. I have been recently tracking and temp was going above 130 degrees and i reckon even 140 but oil pressure was steady all the time. I doubt that with thinner oil you could have steady pressure on FI applications once temp starts going up. Prv valve is related to oil pressure. Difference between Fuchs 10W60 and standard oil in normal operation is minimal actually i haven't noticed any changes in oil pressure. But on track once you start pushing car and temps start going up thicker oil can hold up normal operating pressure Sent from my SM-G850F using Tapatalk Edited October 23, 2016 by Snjur Quote Link to comment Share on other sites More sharing options...
TT350 Posted October 23, 2016 Author Share Posted October 23, 2016 Need to get an accurate set of gauges. Anyone reccomend a brand? Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted October 23, 2016 Share Posted October 23, 2016 Yes but bare in mind that with FI operational temperature of oil pushed on limit. More temperature less pressure. I have been recently tracking and temp was going above 130 degrees and i reckon even 140 but oil pressure was steady all the time. I doubt that with thinner oil you could have steady pressure on FI applications once temp starts going up. Prv valve is related to oil pressure. Difference between Fuchs 10W60 and standard oil in normal operation is minimal actually i haven't noticed any changes in oil pressure. But on track once you start pushing car and temps start going up thicker oil can hold up normal operating pressure Sent from my SM-G850F using Tapatalk Pretty much all modern oils are quite capable of running 120-130c and beyond, most people going FI as in turbo, as this will push running temps up far more than SC, will fit an oil cooler anyway, the whole idea of having differing viscountcies is to provide the correct flow characteristics given the spec of the engine design.Not to mention oil pressure driven components like VVTI etc. A W30 oil should be able to maintain its viscosity and therefore pressure, to its maximum recommended running temp, without the need to use a higher viscosity just to keep the pressure, which is why i was advocating not using too high a viscosity just to increase oil pressure, with the resulting downside of pump and PRV stress i have seen oil pressure vary quite a bit when going from a W30 to W50, don't forget while at its highest temps it may well thin and produce minimal pressure difference, but at normal road driving even with a turbo it WILL make a difference. The fundamental point to remember is that viscosity WILL affect pressure. Quote Link to comment Share on other sites More sharing options...
Snjur Posted October 23, 2016 Share Posted October 23, 2016 (edited) I haven't noticed any difference between 5w30 and 10w60. Only difference was on cold start up where oil pressure gauge was in peak. Already after 5 mins of low rpm driving and warm up it goes to its normal working pressure. 3 engines (vq35de builded engines with increased clearances) now running on Fuchs Titan 10w60 2 twin turbos and 1 single turbo without any issues or problems. Sent from my SM-G850F using Tapatalk Edited October 23, 2016 by Snjur Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted October 23, 2016 Share Posted October 23, 2016 I haven't noticed any difference between 5w30 and 10w60. Only difference was on cold start up where oil pressure gauge was in peak. Already after 5 mins of low rpm driving and warm up it goes to its normal working pressure. 3 engines (vq35de builded engines with increased ckearamces) now running on Fuch Titan 10w60 2 twin turbos and 1 single turbo without any issues or problems. Sent from my SM-G850F using Tapatalk I think you have missed the point, the reason for the pressure being maintained at "normal" is down to the pressure relief valve venting the excess pressure back to the sump. which was my point.its the PRV job. Quote Link to comment Share on other sites More sharing options...
Richf Posted October 23, 2016 Share Posted October 23, 2016 60w would be a massive overkill on an engine in good condition Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted October 23, 2016 Share Posted October 23, 2016 60w would be a massive overkill on an engine in good condition I think that most twin turbo engine builders would disagree. Quote Link to comment Share on other sites More sharing options...
Snjur Posted October 23, 2016 Share Posted October 23, 2016 (edited) My point on 10w60 was on builded engines and bit more serious applications where clearances are increased, forged internals and so. Where you need to have top end oil Sent from my SM-G850F using Tapatalk Edited October 23, 2016 by Snjur Quote Link to comment Share on other sites More sharing options...
wizard Posted November 16, 2016 Share Posted November 16, 2016 Definitely thicker oil, esp if you drive your car hard! Quote Link to comment Share on other sites More sharing options...
ash170990 Posted November 16, 2016 Share Posted November 16, 2016 5w30 Quote Link to comment Share on other sites More sharing options...
Hiro Posted November 16, 2016 Share Posted November 16, 2016 I use mine as a daily driver and I'm using Mobil 1 0W-40. I remember coming across a thread on the US 350 forum and there was data collected on various types of oil samples and Mobil 0W-40 seemed to have decent results. I want to say the Castrol 0W-30 green bottle made in Germany yielded the best results. Additionally, this was for standard N/A engines. The Mobil 1 is fairly easy for me to get and priced decently as I'm over 230K miles now with a oil consuming engine so I need it regularly. Quote Link to comment Share on other sites More sharing options...
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