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bets oil for rb25det

DJ_L3ThAL

By DJ_L3ThAL,
in Engines & Forced Induction

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rev210 Grand Master

rev210

Posted
Posted

I use mobil 1. I do alot of kms and change the oil at 10,000kms or earlier depending on the oil's condition and the type of driving I've been doing.

You can use a partially synthetic oil. I like the pentrite stuff for that. They have exellent high temp range oil 5w-70 and it's only $28. I use the 15w-70 in the volvo V8 and it's better than the mobil 1. I'm switching to the 5w-70 stuff for the skyline next.

rev210 Grand Master

rev210

Posted
Posted

I look at the cold start performance, the pressure stabillity under heat load and how much quicker the car is (if at all).

The pentrite stuff is as good as mobil 1 getting around the motor (mobil 1 is very good) at start up. Shuts the lifter noise up straight away. The pentrite stuff holds idle/stall oil pressure nicely, where as the mobil 1 required a higher rpm for idle to be set to ensure the pressure did not drop into the idiot light zone when the engine had a good thrash.

Basically the oil is great value for money. Oil is after all a disposable consumable for the engine and getting the most expensive oil does not do anything but burn a nice hole in the wallet.

Think about changing the gearbox and diff oil at 5-15,000kms based on the driving style you employ. Go to the drags once and the diff oil at least requires a change (you may notice the silvery metal particals that come out). I am constantly amazed by people who buy mega buck oils and then don't change the diff and trans fluid regularly. It's like driving around with sand in the gearbox.

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