oils an't oils what to use in a 3s gte?????

[TA22-3SGTE]

I have had first hand experience with BP corse plus in my 3sgte running over 30 lbs boost for two years and putting out up to 400rwhp , when I pulled the motor down there were no sign of wear on any of the bearings , they still looked like new and could have been reused , so I will stay with BP corse plus as it has proven itself , I also use only genuine oil filters .

Trevor

[limbo]

Thin oils in new hitech engines are good, but a 3gte usually takes a 25-50w.

The first rating is for cold viscosity while the last is when its hot.
Its the hot rating at matters the most. You will note that most of the stock turbos only have max 10-12 psi of boost. On a wild setup there should be thicker oil to be able to handle the extra heat.

[RWDboy]

All engines are designed with certain tolerances for any metal-metal moving parts that rely on the oil have a certain viscosity in order to provide an effective film between the components. If you run an oil which is 'thicker' because you expect it to need to handle extra heat, then essentially - any time where you *don't* have that extra heat in the oil you *could* be wearing down certain bearings/rings/cam lobes etc.

If your oil temperature is getting very high - you should try and solve the oil temperature problem - rather than just chuck a thicker oil in that will effectively operate at the higher temperature. Ie - fit an oil cooler.

Plus on top of that - whilst the oil may be thicker at the specified SAE temperature - the drop off in viscosity once the temperature starts climbing even further will pretty much ensure that your engine doesn't get the lubrication it needs, and it will suffer from increased bearing wear or even seizure.

[Regina]

Trevor, yeah i've used BP Corse Plus in a 3t-gte for some time and bearings looked good when it was pulled down. That was 20w-60 from memory?

[RWDboy]

BP Corse Plus is 20W-50

Probably about as thick as you would want to go, probably a bit too thick for a freshly rebuilt engine too.

[Toobs]

20W-50 is recommended for the ST185 in Australia.
In Japan they recommend 10W-30 but clearly we don't get the same sort of temperature ranges as Japan... even though the stickers on your import may say to use a thinner oil you need to use the oil that is right for our climate.

Also stick to a decent grade oil (e.g. SJ) and change it regularly (every 5,000kms) and you'll get years out of your engine.
Changing your oil regularly and at consistant intervals will also help you to identify if you have a problem with your engine. (i.e. if you see major differences in your oil colour or oil level)

Don't use a cheap oil filter, stick to Toyota or Ryco filters especially if you are planning on running a thicker oil (e.g. 10W-60) as you are likely to blow the cheaper filters apart with the extra oil pressure.

[2revup]

always have used penrite oils on mine hpr15 running at 20-25 psi never had a issue. as toobs says change every 5,000 not 10,000.

[sw20r]

I'm going to be using some thick 25-50W oil to break in the engine soon.
Then will probably drop down to 15W-60 once she's ok.

I reckon Anything less then 10W is too risky for our conditions.

[Roundy]

would u still change the oil every 5000kms if pretty much all the trips are longer than 1/2 an hr highway driving?

my last oil change i did at 8000km's with HPR15, and the oil didn't look any different to the previous times at 5000kms

[Toobs]

Actually the ??W rating is the cold temp viscosity... it gives you an indication at the sort of protection you'll get at startup.
The lower the ??W rating the better essentially... remember oil is never going to be thinner when cold than it will be when hot.

HPR15 is a good oil but remember it is 15W-60 so is a bit thicker than the factory recommended viscosity.

[Toobs]

would u still change the oil every 5000kms if pretty much all the trips are longer than 1/2 an hr highway driving?

my last oil change i did at 8000km's with HPR15, and the oil didn't look any different to the previous times at 5000kms

You can tell to a certain degree how your oil is going based on the oil pressure and oil consumption but the only way to really know is to get the oil tested by a lab.
Personally I think changing every 5,000kms is cheap insurance on a car that gets driven relatively hard.

[oldcorollas]

20W-50 is recommended for the ST185 in Australia.
In Japan they recommend 10W-30 but clearly we don't get the same sort of temperature ranges as Japan... even though the stickers on your import may say to use a thinner oil you need to use the oil that is right for our climate..

Toobs is on the money.
i asked if i should change oil for the hokkaido winter (i have whatever toyota service uses for 3SGTE) and the answer was no. they use same oil for summer (30deg+) and winter (-10 to -20)...

in aus where temps are usually in the 0 to 40deg range (but sydney, 10-40) a thicker weight of COLD oil is better, but since engine will have more trouble keeping cool in summer, a little thicker hot is also good....

oils with a high range of viscosity (like mobil1 5W50) are considered too thin by people who only think abotu when it is cold... it is still thicker cold than when hot, and 50 is 50, as it is the viscosity measured at set conditions.

i did find mobil1 thinned wuickly above normal running temps tho..

[Toobs]

That's strange that they didn't recommend a different oil for summer to winter... especially with that sort of temp range difference.
What sort of temperate range is listed in the owners manual for the oil they put in?

[thomasbl]

What condition is the engine in? Is is freshly built? In a run-in stage or an established engine?
This will effect what oil you will use as well as the factors that others have mentioned.

[oldcorollas]

That's strange that they didn't recommend a different oil for summer to winter... especially with that sort of temp range difference.
What sort of temperate range is listed in the owners manual for the oil they put in?

will check tonight and update...