What is the recommended engine oil for toyota corolla nze 2001 model

Usually the oil SAE Weight is imprinted onto the oil filler.

Toyota Corolla 4A-F engine. Owners manual says API SF/CC or SG SAE from 5W-30 to 20W-50 Oil Change Interval recommended every 5000 miles under severe conditions.

https://www.google.com/search?q=Oil+recommend+for+a+Toyota+conquest+4af+1.6+16v

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depends on engine make, model and size. can range from $150 to $400 -- just for the part.

lost the operators guide? in glove box.
i recommend getting one, lost of warnings there, an do not do.

if serious above DIY
a real FSM
or at the least alldata.com (log in , read)

Yes - ABSOLUTELY C_maina,

Here in the USA places like AUTOZONE
(personal opinion = yuk) do FREE readings...

("FREE" can be pretty costly).

Typically giving them (A-zone) the OPPORTUNITY to sell
new OXYGEN SENSORS... (the intellectual equivalent
of buying a new THERMOMETER because you have a fever (the "NEW" oxy sensors TYPICALLY complain as well as the old ones...

ERGO...
this is a suggestion I would recommend SKIPPING...

((at least not BEFORE Sherlock Holmes ... has eliminate EVERY other possibility (like throttle position sensor: TPS)).
2003 TOYOTA COROLLA 1 8L L4 Throttle Position Sensor TPS RockAuto

Your car is the right age where your trouble could be anything from collapsing catalytic convertor/muffler, or any over fueling condition...

My very best suggestion... See if you have any EXHAUST shops that perform "FREE" READS...

Possibly bring those "reads" back here for another
(better ...more detailed) FIXYA answer.

Cross check their PARTS PRICES with your available sources on the internet (so at least you can negotiate a BETTER PRICE).
USA exhaust $$$...
http://www.rockauto.com/en/catalog/toyota,2003,corolla,1.8l+l4,1432914,exhaust+&+emission

Hope this helps

Carnac the Magnificent

check the spare part dealer or match the part physically, some have slighter different shapes and fittings

every 3000 miles should change the oil and sounds like your power steeriung pump is going out check the belt make sure it is tight

SInce any noise from within the engine/gear box cannot be taken lightly, it is important that you will need a good look from a service shop. If you have been carrying out the scheduled service in accordance with Toyota timings, there will not be an issue. You could check out if the noise is external,otherwise get you car to the authorised Toyota centre for an estimate. This will be better than trying out/ stipping and then waiting for spares. I hope my advise is helpful. good day

oil/filter 10k. main service/filters.20k.plugs 40k timing belt60k.or annually as above.oil is 5/40 semi synthetic to 50k then10/40 to 100k,then 20/50 thereafter.following this regime you car will last years..........

Park your car on a steep hill or jack the rear end up with a jack.

Locate the timing belt cover.

Increase the rpm and listen for the "rattling sound".

Most likely it's the timing belt guide.

If your engine has over 85,000 miles then you do get a complete timing kit and do the water pump at the same time.

That's called a "knock". You either have carbon on the cylinders which is fixed with a carbon depletion service, or you need to use a higher octane fuel.