best synthetic oil and m/t oil??

[CASTREX]

As far as i have read in diferent websites, Amsoil is the bes syn Oil out there. Including for our cars.

[jouslee]

I don't know man... I like the purple stuff (Royal Purple) but I guess it's because Royal Purple burns clean therefore works well in rotaries, man I miss my rotary. But looking at Amsoil, and 35,000 mile oil changes, it is quite tempting.

I've also heard of this oil called Schaffer's oil (Not sure if I spelled it correctly) you guys might want to look it up. Basically, there are metal molecules in the oil and it pretty much helps seal the oil by filling the tiny gaps in the part of the block that the cylinders are moving up and down (Sorry for my lack of correct terminolgy, I'm from rotory world) therefore better preventing blowback (When exaust gasses go past the oil rings and into the oil). You must see the diagram to fully comprehend this illustration. I personally am quite suspicious because of the metal molecules in the oil but perhaps one of you may be bold enough use it in your yaris. If so PLEASE testify of the products effectiveness.

Thanks
-Josh

[mikeukrainetz]

Originally Posted by jouslee

I don't know man... I like the purple stuff (Royal Purple) but I guess it's because Royal Purple burns clean therefore works well in rotaries, man I miss my rotary. But looking at Amsoil, and 35,000 mile oil changes, it is quite tempting.

I've also heard of this oil called Schaffer's oil (Not sure if I spelled it correctly) you guys might want to look it up. Basically, there are metal molecules in the oil and it pretty much helps seal the oil by filling the tiny gaps in the part of the block that the cylinders are moving up and down (Sorry for my lack of correct terminolgy, I'm from rotory world) therefore better preventing blowback (When exaust gasses go past the oil rings and into the oil). You must see the diagram to fully comprehend this illustration. I personally am quite suspicious because of the metal molecules in the oil but perhaps one of you may be bold enough use it in your yaris. If so PLEASE testify of the products effectiveness.

Thanks
-Josh

Those types of oils / additives I think are made more for engines high mileage, loose rings and worn cylinders to increase compression etc.

as far as 35000 mile oil changes... that cant be serious is it? Ill never change my oil on that schedule.

Just put mobile 1 synthetic in this afternoon and noticed the engine runs smoother, hopefully thats not just a placebo effect of trying an expensive oil.

[sleey0]

Amsoil is great and all but no api/starburst which means not kosher for warranty.

[sleey0]

Holy old thread, batman! My noobness says sorry..

[nsmitchell]

Hey everyone. I still have my 07 Yaris. I've been using synthetic Mobil-1 and my last few have been with Valvoline Synthetic. My Yaris still runs perfectly. Almost 65K miles. Zero engine problems. Valvoline Synthetic with Napa Gold Oil Filters are a match made in heaven! I've been using 5W-20 or 5W-30. I just did a trip with my wife and 2 kids from Richmond, Va to Morristown, NJ and got 39MPG. We had the air conditioning going the whole time. Not bad at all.

[nsmitchell]

Originally Posted by nsmitchell

Hey everyone. I still have my 07 Yaris. I've been using synthetic Mobil-1 and my last few have been with Valvoline Synthetic. My Yaris still runs perfectly. Almost 65K miles. Zero engine problems. Valvoline Synthetic with Napa Gold Oil Filters are a match made in heaven! I've been using 5W-20 or 5W-30. I just did a trip with my wife and 2 kids from Richmond, Va to Morristown, NJ and got 39MPG. We had the air conditioning going the whole time. Not bad at all.

I also have Michelin HydroEdge tires! They are very grippy and safe, even in heavy rain!

[sleey0]

Nippon ENEOS is all that goes in my engine, FWIW.

Just my .02 on an old thread:D

[Hershey]

Both are very good oils as is SHELL Full Synthetic 5w-20 . All are from the same company . No bad choices , just which one is least expensive .

[The Sin]

I recently started a new job as a courier. I drive about 10,000 miles a month. I'm getting my oil changed every two weeks. I want to make the switch to synthetic. I'm thinking of going with Amsoil SAE 0W-30 Signature Series. According to the manufacturer, I can go 25,000 miles on each oil change. Does anyone have any input on this? Anyone else travel high miles like me? If so, what do you use? When I make make the switch, should I do a flush? I have just a little over 50,000 miles on my 2010 Yaris.

[Happy Little Pony]

Amsoil is a perfectly fine choice. If it were me, I'd run out to 7 or 8 thousand miles and then pay for an oil analysis test. That's the only way you can be sure that the oil is holding up well in your particular application.

Another thing to consider is that Amsoil says the oil will hold up for 25,000 miles, but the oil filter they spec for the 1NZFE is only rated for 15,000 miles.

[Hershey]

Originally Posted by The Sin

I recently started a new job as a courier. I drive about 10,000 miles a month. I'm getting my oil changed every two weeks. I want to make the switch to synthetic. I'm thinking of going with Amsoil SAE 0W-30 Signature Series. According to the manufacturer, I can go 25,000 miles on each oil change. Does anyone have any input on this? Anyone else travel high miles like me? If so, what do you use? When I make make the switch, should I do a flush? I have just a little over 50,000 miles on my 2010 Yaris.

Someone we know drives about 40,000 miles a year with his 2010 YARIS 3 door bought in October of '09 and gets his oil changes at the local TOYOTA service center . Would think that oil to be MOBIL 5w-30 . Car runs fine as I know . If you want a synthetic , I'd say Pennzoil Platinum or the ULTRA when on sale or at local WAL-MART in a 5 gallon jug at around $26 . As for a conventional , the PENNZOIL yellow bottle is a stellar oil or the TOYOTA oils at your nearby TOYOTA parts department . These in a 5w-30 would be good for 5,000 > 7,500 mile O.C.. To keep your warranty until the 60,00 mile mark you'll need to get it changed every 5,000 miles . If not a concern , then a synthetic would be best value for a 7,500 > 10,000 mile interval . Let us know what you decide .

[daf62757]

Originally Posted by The Sin

I recently started a new job as a courier. I drive about 10,000 miles a month. I'm getting my oil changed every two weeks. I want to make the switch to synthetic. I'm thinking of going with Amsoil SAE 0W-30 Signature Series. According to the manufacturer, I can go 25,000 miles on each oil change. Does anyone have any input on this? Anyone else travel high miles like me? If so, what do you use? When I make make the switch, should I do a flush? I have just a little over 50,000 miles on my 2010 Yaris.

You might be past the point of no return with respect to regular oil. I tried to switch my step daughters car over to pure synthetic and it resulted in oil leaks. The syn oil is so thin it seeps between the seals. Her car had over 100K miles so maybe yours is not too far gone. You can use the high mileage oil with is 50/50 regular and syn.

You can try 100% syn and see if it results in oil leakage. If not, go for it.

I personally use Mobil 1 0w20 and change at 10K. I have almost 60K and never had any problems.

AMSOIL is very expensive! You can usually buy Mobil 1 at Advance Auto on sale and get 5 quarts and an oil filter for around $25. After four or five of those, you have enough left overs for a free oil change.

[ecc_33]

my castrol edge full synth has been awesome.... i wouldn't change for anything. For that matter what ever you choose to use just stick with it. The hardest thing on a engine is switching wieghts of oil and brands often

[Hershey]

The TOYOTA synthetics are a good oil that can be bought for under $6 a quart . A value for a 7,500 > 10,000 mile interval .

[lenzomaru]

I would like to use syntec oil, but as a way to save money as this will extend my oil change time, i currently change my oil at 5000km (dusty roads,day temp avg 31 deg c) with syntec i believe i can go for 10,000 saving me money for oil filters and also time (as i change oil myself) My yaris takes a little under 4 qts of oil

- 4 qt of castrol 10w 30 dino oil is $30 US
- 4 qt castrol 10w 30 full syntec $53 US

Since i'll be doing 2 dino oil changes in the same amount of time (10,000km) i'll have to buy 8 qts dino oil totaling $60 US as compared to $53 US for the full syntec during the same period (10,000) also i will have to purchase and extra oil filter ($20US) and my time to change it.

so the syntec works out for me

[lenzomaru]

Switched to Amsoil 10w 30 full syntec two days ago in my yaris sedan and my wife told me that the yaris is "driving dead"...Anybody know what maybe causing this ,, i used regular dino Castrol oil before, with no problems. I switched to syntec to save some $$$ since it increases my oil change interval.

Should i leave the syntec in my car? or drain out and go back to dino?

[tmontague]

Originally Posted by lenzomaru

Switched to Amsoil 10w 30 full syntec two days ago in my yaris sedan and my wife told me that the yaris is "driving dead"...Anybody know what maybe causing this ,, i used regular dino Castrol oil before, with no problems. I switched to syntec to save some $$$ since it increases my oil change interval.

Should i leave the syntec in my car? or drain out and go back to dino?

Not too sure what she means by "driving dead". When I changed to syn I noticed easier starts and smoother engine function (noise, feel, vibration etc). I just use Canadian tires Formula syn oil which is very cheap on sale. Removed my valve cover last night to replace the seal and at 138000km it look ridiculously clean and brand new. No dark oil build up any where. I change it every 8-9000km depending on if I'm doing more city driving or not and the temperature.