OIL:)

[Apolan]

tnx guys!

Ryo: about 10w60 im not too sure. its fully sintetic and the gap is really big (so a lot of syntetic stuff). Klaus (mo-racing) wrote about his findings when talking too an oil-guy.

Quote:in my lucky position at work i sometimes get the chance to speak to engineers of different companys. after a conversion with a guy from shell i had this opinion on oils.

this is what an application engineer told me:

for lubrication synthetic is many times bether than mineral.
for durability synthetic is not good. the synthetic stuff is "breaking" at higher temperatures in a periodically way (above 100-110°C this happens quickly!).
the first number is the viscosity of the base oil. the second number is the viscosity reached through chemistry.
oil with a big viscosity range has lots of synthetic and breaks quicker.

what is semi-synthetic???
these are synthetic oils as well. every oil that has a viscosity range has synthetics. they just say full-synthetic to 0W-xx and 5W-xx oils. everything else is called semi-synthetic



so i will use 10W-40 for everyday and change it after 5 - 10tkm. and for trackdays i will get 20W-50 valvoline because of it´s thicker base-oil and less synthetic stuff. (also heard from drag racers who stoped breaking bearings after changing from 10W-60 to 20W-50)

for gearbox oil i will choose a safe 80W-90 and for diff i will try the 75W-140 diff oil from castrol.

i have found simmilar oppinions on some other forums... so choose accordingly. i think something like 10w40 is best for daily drives, for track you can use something more heat resistant xx-50 or maybe even xx-60 still trying to keep the range down.

considering brands, it really doesnt matter that much. just look for mark wich says 10w-40 (or whatever you decide to buy) and choose the cheapest. =)

watching a Best Motoring show the other day (type-r special) featuring Mr. Ichishima, the head of Spoon Sports. He said: Oil is not whisky, just get the propper standard, regardless to the brand. =)

talking to a guy who races in our national cup (rally). he also said that it really doesnt matter what brand you get. to proove that he showed me the oil he uses. it was a 15w40 xy-no-name-brand oil, which he got for a quarter of a price you would usually pay for a "brand oil". its more important to keep the changes regular and oil fresh, than using a fully sint oil for longer period of time.

btw, the only oil that made a difference between all is Motul if you can afford it. is supposedly has some additives that make a difference.

[jamiemirror]

Ryo Wrote:Valvoline is making some interesting oil for engine he cost twice like DuraBlend 10w40 and his name is VR1 Racing 10w60 should i try ?
For the transmission is here SynPower TDL 75w90 GL-3/4/5 that cost twice like DuraBlend GL-4 i readed about not to use GL5 oil in transmission so i dont know if i should use it.

Avoid using racing oils for everyday driving - some of them missed any washing/clearing agents !!! This is not problem for racing engines.
The reason to use non-GL5 oil in gear box is to avoid some sulfuric compounds because there is a risk of synchro damage - all non-iron and non-steel parts can be damaged and worn (ironically - these sulfuric additives make the GL5 so good for all-steel rear ends).

PS: My Motul dealer says that for AE86 gears I can use Motul GL4/GL5 gear oil - after look-up in the Motul papers and tables. I choose GL5 synth Motul.

[Apolan]

what do we know about Castrol Glycol LS 90 oil??? is this the correct stuff for our LSDs?

[jamiemirror]

Apolan Wrote:what do we know about Castrol Glycol LS 90 oil??? is this the correct stuff for our LSDs?

Are you sure about "Glycol" and oils ? Sounds like mismatch with ethylene glycol (antifreeze).

[Brian]

Hi all,

I prefer Motul 90PA for the LSD.

Redline MT90 is the finest oil for the transmission. Shifts the nicest of all the oils I've tried.

[Blueneon]

This may be of interest to the board, its relevant to this topic

http://www.zxoc.co.uk/forum/topic.asp?TOPIC_ID=646

[mr monster]

i've been looking around for some oil for my gear box and the only gl-4 oil i found is castrol ep 140 and some other oil that is gl-3 gl-4 and gl-5 compatible,i was wondering which i should use ?

[islade]

what you think of Midland Synkron 10W-50 for engine, High Performance 80W-90 for gear box and Midland / Quaker State High Performance 85W-140 for LSD????

[jamiemirror]

I don't know Midland well - so I will choose quality product from well known manufacturer - Mobil, Motul, Castrol, Amsoil, Redline (for example).

[hrc]

Hello all,

I read complete article -> everyone is using different oil

Is somebody using:

Castrol RS 10w60, or Mobil 5w50 / 0w40?

Mobil 1 Protection Formula 0W40 (full synth - pdf)
http://www.autokreso.hr/pix_pub/upload/p..._OW_40.pdf

When I buy ae86, my mechanic put inside 0w40... Oil pressure on idle was on middle (warm engine)

Currently I'm running on Mobil-S 10w40 (semi synth), oil pressure is little a bit lower than middle (warm engine)...

Any recommendations, to get back od 0w40, or to try another?