Is Royal Purple 5w30 any good?
#31
It's your ride and you pay the bills do what you want. I have no problem with well thought out mod's. 5w30 might be a good thing for someones driving needs. I would first check out bob is the oil guy sight and see what some of the more well informed oil experts thought and also look at some UOA's using 5w20 in vehicles that the manufacture indicated 5w30. Racing a RX???
This oil is superior in terms of fuel economy, engine protection, and cold starting performance.
Most 5w-20 UOAs posted BITOG show better wear number than 5w-30, which verify claims made by Toyota.
#32
Lexus Champion
Reread your post where it says *Note* use the grade oil that is indicated on your oil cap. Mine says 5w30.
#33
I realize there are folks that must use XXX despite indepent scientific data and what OEM uses here. That is fine but let's not question other's experience w/o some facts.
#34
Super Moderator
Has something happened to Mobil 1 synthetic? Its a pure synthetic right? I used to use RP in my mustang when i had it.. I remember getting the headgaskets replaced and the block was as clean as a whistle inside.. I guess switching to RP won't hurt anything right? BTW isn't the GS rated for 5w 30 anyway?
Amsoil
Royal Purple
Redline
Motul
German Castrol
There are a few others, but those are the biggies. Nearly every multiweight oil (those with a w in the designation, like 5w30) you can buy at your local store is a fake Group III "synthetic" just like Mobil 1.
#35
Lexus Champion
5w-20 and 0w-20 are factory filled in these engines at Toyota's plants starting at March 2006. If you search, you will find owners are confused that their oil caps say 5w-30 and owner's manuals say 5w-20. Most owners should be smart enough to look into reasons behind oil recommendation instead of blindly following an outdated mark. Especially when Toyota simply do not want to scrap an huge inventory of outdated cap.
I realize there are folks that must use XXX despite indepent scientific data and what OEM uses here. That is fine but let's not question other's experience w/o some facts.
I realize there are folks that must use XXX despite indepent scientific data and what OEM uses here. That is fine but let's not question other's experience w/o some facts.
#36
Rookie
iTrader: (15)
TunedRX300 is saying those with newer lexus (2006+ models) will find that their oil cap says 5w-30, but the manual will state 5w-20.
The newer 06+ GS430 uses the 3UZ-FE engine that is carried over from the 01-05 GS430. The engines are exactly the same in both cases, yet one says 5w-20 and the older one says 5w-20. If Lexus is able to switch over to 5w-20 on factory fills, then there is no reason why the guys with the 01-05 GS430 can't do the same.
The newer 06+ GS430 uses the 3UZ-FE engine that is carried over from the 01-05 GS430. The engines are exactly the same in both cases, yet one says 5w-20 and the older one says 5w-20. If Lexus is able to switch over to 5w-20 on factory fills, then there is no reason why the guys with the 01-05 GS430 can't do the same.
#37
Lexus Champion
TunedRX300 is saying those with newer lexus (2006+ models) will find that their oil cap says 5w-30, but the manual will state 5w-20.
The newer 06+ GS430 uses the 3UZ-FE engine that is carried over from the 01-05 GS430. The engines are exactly the same in both cases, yet one says 5w-20 and the older one says 5w-20. If Lexus is able to switch over to 5w-20 on factory fills, then there is no reason why the guys with the 01-05 GS430 can't do the same.
The newer 06+ GS430 uses the 3UZ-FE engine that is carried over from the 01-05 GS430. The engines are exactly the same in both cases, yet one says 5w-20 and the older one says 5w-20. If Lexus is able to switch over to 5w-20 on factory fills, then there is no reason why the guys with the 01-05 GS430 can't do the same.
#38
Rookie
iTrader: (15)
If toyota was aware that 5w-20 would give their engines some sort of failure, I would think they know about it by now. Fact is, not only Toyota is switching to 5w-20.
I use 5w-20 in my engine because my engine doesn't even get up to temperature, so 5w-20 works better. And plus like TunedRX300 said, UOA have shown 5w-20 to wear better than 5w-30. Personally I dont have any trouble with both viscosities.
I use 5w-20 in my engine because my engine doesn't even get up to temperature, so 5w-20 works better. And plus like TunedRX300 said, UOA have shown 5w-20 to wear better than 5w-30. Personally I dont have any trouble with both viscosities.
#39
TunedRX300 is saying those with newer lexus (2006+ models) will find that their oil cap says 5w-30, but the manual will state 5w-20.
The newer 06+ GS430 uses the 3UZ-FE engine that is carried over from the 01-05 GS430. The engines are exactly the same in both cases, yet one says 5w-20 and the older one says 5w-20. If Lexus is able to switch over to 5w-20 on factory fills, then there is no reason why the guys with the 01-05 GS430 can't do the same.
The newer 06+ GS430 uses the 3UZ-FE engine that is carried over from the 01-05 GS430. The engines are exactly the same in both cases, yet one says 5w-20 and the older one says 5w-20. If Lexus is able to switch over to 5w-20 on factory fills, then there is no reason why the guys with the 01-05 GS430 can't do the same.
Thanks for clarifying what I meant.
To give another example, Acura/Honda made the switch in 2002, the TL did not make a single change in the J32 engine. Junk yard are not filled up with post 2001 TLs with dead engines either.
What is the point to show further data? Logic, Toyota official statement of 20 weight protecting engine better, and BITOG UOA data won't make a single difference if one choose not to believe them in the first place. Just not worth it.
#43
Lexus Champion
OK, can you point me to some expert analysis that shows it is better for my engine, other then MPG? Will it make my engine last longer? Will it give me better MPG with no adverse effect? Just want to see some study info versus assumptions that since the manufactures are changing to 5w20 it must be better. Thanks
#45
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so my local autoparts store sells 5w20 for $5.52 CAD per liter
plus some environmental fee that government charges for all engine oil and stuff...
so thats like approx. $5 USD per quart
is that a good price?
can i mix it with the mobil 1 5w30 that i still have?
or castrol GTX 5w30?
or should i just give the GTX to my friend?
plus some environmental fee that government charges for all engine oil and stuff...
so thats like approx. $5 USD per quart
is that a good price?
can i mix it with the mobil 1 5w30 that i still have?
or castrol GTX 5w30?
or should i just give the GTX to my friend?