Synthetic Oil-Miles Before Change?

[DMAX03]

Hi Guys,

I've switched over to synthetic since the beginning for my 07 Camry V-6. I drive about 30K a year, 90% highway. I've been changing every 5K but I wonder if I can extend change to 7,500 or even 10K. Oil looks good at 5K and filter shows little contamination.

Thanks

[njerald]

Originally Posted by DMAX03

Hi Guys,

I've switched over to synthetic since the beginning for my 07 Camry V-6. I drive about 30K a year, 90% highway. I've been changing every 5K but I wonder if I can extend change to 7,500 or even 10K. Oil looks good at 5K and filter shows little contamination.

Thanks

If you want to void your warranty, no problem.

[gdanaher]

It's now been years ago but when my '99 sludged up, I was changing at 5k intervals and using Mobile One to boot. The pcv got clogged and from there it went downhill. I drove mostly short distance and there was no definition to what they considered 'severe service', so it got changed every 5k. After the engine was de-gunked I changed to using dino oil every 3k miles without further issue. I lost my faith in Mobil One.

Way back when Mobil One was first introduced, and I think it was around 1970, they ran TV ads showing engines with high mileage that had Mobil One run for 25k miles between changes. They were proud of their long life oil. Container advertised long change intervals. No sludge. Nice clean engines. Somewhere along the line they changed the formula or base oil or something. In any event, if the car is in warranty I wouldn't dare try to test it by extending the interval beyond 5k miles. Or if you do, be aware of the probability that you will accumulate sludge in the valve covers and deal with it appropriately.

[TRD VVTi]

Follow the manufacturers recommendations.

Using a higher quality oil like Mobil 1 is a great idea and is beneficial.

[gene112601]

There is a Oil Brand AMSOIL im using that Oil and its really good 100% Synthetic Oil with that Oil the Life of the Oil is 25.000mls or 1 Year
check at AMSOIL.COM

[TRD VVTi]

Originally Posted by gene112601

There is a Oil Brand AMSOIL im using that Oil and its really good 100% Synthetic Oil with that Oil the Life of the Oil is 25.000mls or 1 Year
check at AMSOIL.COM

Another Amsoil spammer. How unusual. Posting to push a product that isn't even an answer to the OP's question.

The OP isn't having an oil problem...

[gene112601]

Originally Posted by TRD VVTi

Another Amsoil spammer. How unusual. Posting to push a product that isn't even an answer to the OP's question.

The OP isn't having an oil problem...

Hey i am not a Spammer im Using that Oil and Just giving to him a IDEA of the Life and OIL quality

[Hajoca]

If you really want to extend oil change intervals, you must consider a couple of things, one is where does the 'solid particles' like ash, soot, wear metals, etc go?
Then I would consider testing samples of oil at 5k, 8k.... and see what the results are before just extending the drain interval to a full 30k.

[tvsjr]

Originally Posted by gene112601

Hey i am not a Spammer im Using that Oil and Just giving to him a IDEA of the Life and OIL quality

first LEARN How To type, oK?

Amsoil is snake oil, pure and simple. A company marketing a truly excellent product (as Amsoil would like you to believe) wouldn't need to use sneaky tricks (for instance, saying their product meets API certification, when it's not actually API certified) to sell their products.

[ShawnM]

I have no problem with amsoil but I typically just use shell 5-30 synthetic on my wifes camry. Try to change it about every 5K miles. In my opinion anything more that 6K between changes is pushing it. Not just due to the life of the oil but it gives you a chance to look over the rest of the car and catch any other leaks or issues (tire wear) that could cause you problems when your out on the road.

[TRD VVTi]

Originally Posted by tvsjr

first LEARN How To type, oK?

Amsoil is snake oil, pure and simple. A company marketing a truly excellent product (as Amsoil would like you to believe) wouldn't need to use sneaky tricks (for instance, saying their product meets API certification, when it's not actually API certified) to sell their products.

BINGO!

Amsoil "recommends" their product. Note that they never state it meets the GF-4 specification for their oils, or the Type T-IV specification for their transmission fluid. They recommend it. Of course they do, they're the ones trying to sell it...

I'm not knocking Amsoil. They just aren't as good as everyone would like to believe they are.

Amsoil states directly on it's bottle that it recommends oil changes of up to 7,500 miles OR up to the auto manufacturer's recommendation. That is hardly 25,000 miles or 1 year in this case.

The OP stated:

I've switched over to synthetic since the beginning for my 07 Camry V-6. I drive about 30K a year, 90% highway. I've been changing every 5K but I wonder if I can extend change to 7,500 or even 10K. Oil looks good at 5K and filter shows little contamination.

That doesn't seem to me like he's having a problem with his Mobil 1 oil, and is looking for a fanboy to recommend another brand.

[tvsjr]

I use this theory:
http://www.mobiloil.com/USA-English/...rs_Choice.aspx

There are some big names in that list. They have billions of dollars of R&D between them. Many of those vehicles are quite expensive. They all choose Mobil 1 as their factory fill oil, some going so far as to demand that only Mobil 1 be used in the motor. I don't see many manufacturers demanding Amsoil in their motors. Many will even void your warranty if they find out you've been using a non-certified oil.

I use a similar theory for my diesel truck, using Shell Rotella T. Factory fill in lots of big trucks - I doubt the manufacturers are trying to force use of an inferior oil.

Oh, and change the oil every 5K like the book says, OK? Really, it's about the cheapest thing you can do to the vehicle, and the most likely to make the motor last a long time.

[thoots]

To me, 5,000 miles is an "extended interval." Once again, I just can't understand, can't understand, can't understand, ABSOLUTELY FREAKING CAN'T UNDERSTAND why anyone would want to "push" their oil change intervals. "Oh, bummer, might sludge up and ruin my engine -- what the hey, let's go for ten grand!"



I drive what I consider to be ULTRA-ULTRA-SEVERE service: My commute is probably no more than 10 minutes, and so I even drive home for lunch. That's four "barely get the engine warm" trips per day. Even trips to shopping aren't that far away, either.

So, I don't want to "extend my intervals" -- I want to GET THAT JUNKY OIL OUT OF MY ENGINE!! Now, since my commute is short, I don't put a lot of miles on my car. So, the typical three thousand miles can stretch out to even as long as six months. Five thousand miles? Forget about it!!

And, since synthetic oil (yes, even Mobil 1) builds up less gunk than dino oil does, I want to use synthetic, and change it often. I used to change it "every three months, whether it needed it or not." Now, with my driving, that could be as low as about 2,000 miles -- that's pretty excessive. So, I eventually bumped that up to changing it "every four months, whether it needed it or not."

So, that's what I've been doing for the past couple of years. Every four months, with Mobil 1 and a new Toyota filter. If that means I've got the cleanest oil in my engine than anyone else in here, well, that' just FINE and wonderful to me.

I've got the new SE V6 now, and I just passed 1,000 miles -- time for that first oil change, to get the factory fill and any contaminants out of there. That's on the tap for tomorrow, and I will go straight to Mobil 1. Then, it'll be every four months thereafter.

[DMAX03]

Originally Posted by thoots

To me, 5,000 miles is an "extended interval." Once again, I just can't understand, can't understand, can't understand, ABSOLUTELY FREAKING CAN'T UNDERSTAND why anyone would want to "push" their oil change intervals. "Oh, bummer, might sludge up and ruin my engine -- what the hey, let's go for ten grand!"



I drive what I consider to be ULTRA-ULTRA-SEVERE service: My commute is probably no more than 10 minutes, and so I even drive home for lunch. That's four "barely get the engine warm" trips per day. Even trips to shopping aren't that far away, either.

So, I don't want to "extend my intervals" -- I want to GET THAT JUNKY OIL OUT OF MY ENGINE!! Now, since my commute is short, I don't put a lot of miles on my car. So, the typical three thousand miles can stretch out to even as long as six months. Five thousand miles? Forget about it!!

And, since synthetic oil (yes, even Mobil 1) builds up less gunk than dino oil does, I want to use synthetic, and change it often. I used to change it "every three months, whether it needed it or not." Now, with my driving, that could be as low as about 2,000 miles -- that's pretty excessive. So, I eventually bumped that up to changing it "every four months, whether it needed it or not."

So, that's what I've been doing for the past couple of years. Every four months, with Mobil 1 and a new Toyota filter. If that means I've got the cleanest oil in my engine than anyone else in here, well, that' just FINE and wonderful to me.

I've got the new SE V6 now, and I just passed 1,000 miles -- time for that first oil change, to get the factory fill and any contaminants out of there. That's on the tap for tomorrow, and I will go straight to Mobil 1. Then, it'll be every four months thereafter.

Just for the record I run a 2500HD Silverado Diesel and change out synthetic every 10K as recommended and have oil analyized by Blackstone Labs every time. Lab reports are always excellent.

[thoots]

Originally Posted by DMAX03

Just for the record I run a 2500HD Silverado Diesel and change out synthetic every 10K as recommended and have oil analyized by Blackstone Labs every time. Lab reports are always excellent.

So, how much does the lab analysis cost as compared to an oil change?