Hi Everyone

[Nico-supra]

Hi everyone , I've just recently bought a mk4 import twin turbo (supra tt)

I need to buy some oil ?? Whats the best to use ??

Any advice would be greatly apreciated.

I'm currently loving the car and can't believe why i didn't buy one sooner..

[Ahhhh__Aristo]

Hiya and welcome.

Best thing for them is Valvoline 5w50

[Jones~32]

Welcome to the Club

Congrats on getting a Supra, dont know much about them myself, apart from they are FAST! :D

[tbourner]

Yeah Valvoline SynPower is recommended.

Also good ones are Silkolene Pro-S and Royal Purple. Make sure you get an Ester/PAO based fully synthetic - just cos it says 'fully synthetic' on it doesn't mean much!!

[Leeky]

I've started using Halfords own oil on a recommendation.

5w-50w Fully Synth for only £21.99 for a full 5ltrs....means i can do 3 oil changes for the price of one Castrol Edge oil change.

Strange but the engine runs better on this Halfords stuff than the Castrol stuff

[tbourner]

Read this:

I'm afraid picking a good oil is difficult due to the labelling of synthetics. The Mobil vs Castrol court gas in the US changed things forever I'm afraid.

I hope this will go some way to explaining why it's a minefield out there and you must be very careful!

Please take time to read this, it's important

Costs of synthetics vary considerably. The most expensive are the "Ester" types originally only used in jet engines. These cost 6 to 10 times more than high quality mineral oils.

The cheapest synthetics are not really synthetic at all, from a chemists point of view. These are in fact specially refined light viscosity mineral oils known as "hydrocracked". These have some advantages over equivalent mineral oils, particularly in lower viscosity motor oils such as 5w-30 or other oils with a low "W" rating such as 5w-50 etc and they cost about 1.5 times more than good quality mineral fractions.

We use several different grades of this base oil, where appropriate. This is the "synthetic" which is always used in cheap oils that are labelled "synthetic". Yes it's a cruel world, you get what you pay for!

Now, you may ask, why are these special mineral oils called "synthetic"? Well, it was all sorted in a legal battle that took place in the USA about ten years ago. Sound reasons (including evidence from a Nobel Prize winning chemist) were disregarded and the final ruling was that certain mineral bases that had undergone extra chemical treatments could be called "synthetic".

The marketing executives wet their knickers with pure delight! They realised that this meant, and still does, that the critical buzz-word "synthetic" could be printed on a can of cheap oil provided that the contents included a few percent of "hydrocracked" mineral oil, at a cost of quite literally a few pence.

So, the chemistry of "synthetics" is complex and so is the politics!

The economics are very simple. If you like the look of a smart well-marketed can with "synthetic" printed on it, fair enough, it will not cost you a lot; and now you know why this is the case. But, if you drive a high performance car, and you intend to keep it for several years, and maybe do the odd 'track day', then you need a genuine Ester/PAO (Poly Alpha Olefin) synthetic oil, this oil costs more money to buy, because it costs us a lot of money to make, very simply, you always get what you pay for!

Basically don't believe an oil is fully synthetic just because it says so on the tin - get proper advise and get GOOD oil for your turbos.

It WILL cost more, but isn't it worth it?