Oil discussions are akin to religious discussions. And I understand you are digging for info without the ability to start a new thread due to low post count.

That said, I run full synthetic 5w-30 with no leakage or consumption in my 2000 3.4l with 240,000 mi. I change the oil and quality oil filter once a year (~7,000 mi) along with driveline lube, tire rotation/brake check, clean the air filter and general good once over.

Once a year it gets the love. I feel any more than that is a waste of time and oil, plus the disposal/process for recycling. Not sure about the gas mileage but I do know synthetics provide better lubrication at start-up. That's when the serious wear occurs and accumulates.

At OP, it’s up to you if you want to make the switch. I like full synthetic, even used AMSOIL signature series for 73K miles worth of oil changes before switching to Pennzoil Platinum, and eventually to Pennzoil Ultra Platinum. I’ve got 312K on the odo at the moment, but I plan to switch to Costco’s Kirland full synthetic at my next oil change (mfg by Warren Distribution)

Over the last 10K~ miles I’ve begun to notice some slight oil consumption. I would feel very hesitant to switch back to conventional after using synthetic exclusively for over 100K miles worth of oil changes, but I hope that by switching brands maybe the consumption amount will be less over time

IMO, the main reason for synthetic in these engines---which are reputed to NOT be demanding about what type of oil is used--- would be if you want to extend the change interval. I use a group 3 oil ("fake" synthetic, like Castrol Edge, Valvoline Synpower, etc) and change every 6 months. In 6 months I can have anywhere from 3000 miles to 7000 miles. If it's 3000 mi, that would be mostly short trip driving, which pollutes the oil more with combustion byproducts. If it's 7000mi, that's a lot of long trip driving, in which the oil stays cleaner.

we do have the coveted necro thread award for the posters who dig up and reply to 10+ year old threads and continue the conversation with accounts long dead. But I would agree this thread is not suited for the award yet, another 10 years and it will be considered.



the current record holder is recorded in this thread

any big differences between 00-02 limited grades

Probably because people scream at them if they start another thread on an old topic that's has a few threads.


Not everyone lives on this forum and is up to date on information. Gosh some users really need lighten up already. If users have something to contribute they will. Granted, I doubt the old posters will respond back to them.

I thought the forum purpose was to help others fix things and learn?

Not to mention new users can't start new threads for a little while.

As I don't think being rude is going to fix the situation any. All it does is make the person doing it look bad. Not to mention frustrate the other person trying to get something fixed or repaired.

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I wish they would pin the "3rd Gen All Questions Allowed" thread. That would really help with some of the spamming questions and thread bumps. Just my $0.02