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Discussion Starter #1
Whats ur feelings?

I'm running Castrol Magnatec, but if theirs anything better that doesn't break the bank.

Mobil 1 suposed to be good but where I am it's pretty damn expensive!

Magnatecs been good sofar!:cool:
 

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Gary at GT-Art who services my motor is currently swearing by this Neo stuff. It is expensive but he reckons that we will be able to double service intervals becuase it just doesnt break down as readily as others.

I will be keeping an eye on it, and will keep you all informed.

Cheers,
Pad
 

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Dandy Highwayman
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I've always run magnatec in my N/A cars and tried it in my r32 gtst didnt seem to maintain pressure well, switched to Mobil 1 Motorsport 15w (not 0w) much better.

As I understand it the more synthetic the oil the less lightly to cause sludge and to coke up the turbo bearings.

if you want to go further than mobile1 or castrol rs, theres royal purple , amsoil, neo, red line, torco, motul. you'll find somebody that swears by each of them
 

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Going to change my oil this afternoon, got some Castrol RS to try this time around, it was expensive, but then I was recommended it...

Every 1000 miles Jock??!! That would mean me changing my oil every 2-3 weeks...!!! :eek: :eek:
 
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I used Halfords fully synth once but something inside me didn`t want to trust it & i think it was in there about 20 miles before i drained it all out. Bloody expensive engine flush that was.
 

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D1 and Only
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I blend my own oil...........at work, This is a fully synth oil graded at 10w40............
but we make allsorts of grades and types of oil.....5w40/10w40/15w40/5w50/10w50/15w50 the list is endless.......

We have a 205ltr drum of fully synth 5w40 which is ace for most cars.
The worst thing you can do is keep swaping oils, not the grade but the type ie. mineral/ semi synth and fully synth... etc

I have found if you are under say about 400bhp and running turbos, a repectable oil should last well over 5000 miles.......
But if you are one of the big boys lets say 400bhp and on up to 1000bhp then yes you will have to change your oil more frequenly........
most pepole forget about the gearbox oil... bet no one's changed that !!!!! (Rich Bell has)
Anyway this is only what i have picked up for owning cars and from work....

AL
 

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D1 and Only
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This has lots of usefull info in........like grades/Viscositys etc.....
http://popularmechanics.com/automotive/auto_technology/2002/8/motor_oil/index3.phtml


""Viscosity (a fluid's resistance to flow) is rated at 0° F (represented by the number preceding the "W" [for Winter]) and at 212° F (represented by the second number in the viscosity designation). So 10W-30 oil has less viscosity when cold and hot than does 20W-50. Motor oil thins as it heats and thickens as it cools. So, with the right additives to help it resist thinning too much, an oil can be rated for one viscosity when cold, another when hot. The more resistant it is to thinning, the higher the second number (10W-40 versus 10W-30, for example) and that's good. Within reason, thicker oil generally seals better and maintains a better film of lubrication between moving parts.

At the low-temperature end, oil has to be resistant to thickening so that it flows more easily to all the moving parts in your engine. Also, if the oil is too thick the engine requires more energy to turn the crankshaft, which is partly submerged in a bath of oil. Excessive thickness can make it harder to start the engine, which reduces fuel economy. A 5W oil is typically what's recommended for winter use. However, synthetic oils can be formulated to flow even more easily when cold, so they are able to pass tests that meet the 0W rating.

Once the engine is running, the oil heats up. The second number in the viscosity rating--the "40" in 10W-40, for example--tells you that the oil will stay thicker at high temperatures than one with a lower second number--the "30" in 10W-30, for example. What's really important is that you use the oil viscosity your car's owner's manual recommends.""



AL
 
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So with all that in mind then & you obviously know your stuff whats the best oil grade to use in an RB25DET?
 

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M's Factory
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I think if you had reasonable oil and change very regularly it is a good thing.

Remember the Oil Filter and Fuel Filters too some people forget the fuel filters.
 

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Skip said:
Going to change my oil this afternoon, got some Castrol RS to try this time around, it was expensive, but then I was recommended it...
Hi Skip :)

I use Castrol RS in my car, too. It's not an RB25, but it revs to 8000 rpms under high boost anyway.

Castrol RS is available for you to buy online directly from the manufacturer (if you live in the UK) at the following URL: http://www.castrolclassicoils.co.uk/ Free delivery for orders over £30.
 
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