Should I switch to 10w30?
05-14-18, 09:11 AM
#1
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Thread Starter
Should I switch to 10w30?
My 06 is350 has some valvetrain noise when I first start it that doesn’t go away until the engine is completely warm. Where I live the temperature rarely ever drops below 40 degrees and stays in the 50’s and 60’s on average. I’m thinking that 10w30 may be the better way to go as it would provide better protection at startup and behave the same as 5w30 once the engine has warmed up fully. What do you guys think? Does anyone use 10w30 in their is350?
05-14-18, 09:52 AM
#2
Instructor
05-14-18, 10:00 AM
#3
I also live in a warm climate, Arizona. I have used 10W30 Pennzoil Ultra Platinum in my 2008 ISF since new. I also used it in my late wife's ES350. Her ES had valve train noise when new. When I switched here over to 10W30, the noise stopped.
So my answer, is YES - But only if your IS350 never sees freezing temperatures.
Lou
So my answer, is YES - But only if your IS350 never sees freezing temperatures.
Lou
05-14-18, 12:18 PM
#4
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Thread Starter
I also live in a warm climate, Arizona. I have used 10W30 Pennzoil Ultra Platinum in my 2008 ISF since new. I also used it in my late wife's ES350. Her ES had valve train noise when new. When I switched here over to 10W30, the noise stopped.
So my answer, is YES - But only if your IS350 never sees freezing temperatures.
Lou
So my answer, is YES - But only if your IS350 never sees freezing temperatures.
Lou
05-14-18, 12:22 PM
#5
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I know what lexus recommends as I currently am just using 5w30.
however they also try and tell you that your transmission oil is a “lifetime” fluid.
So I don’t see their oil chart as something that should be blindly followed.
The difference between 5w30 and 10w30 is 0 once the engine reaches optimal
temperature so if using 10w30 really is going to have a negative effect on the engine
can you elaborate on that further please?
however they also try and tell you that your transmission oil is a “lifetime” fluid.
So I don’t see their oil chart as something that should be blindly followed.
The difference between 5w30 and 10w30 is 0 once the engine reaches optimal
temperature so if using 10w30 really is going to have a negative effect on the engine
can you elaborate on that further please?
Last edited by AndaleFish; 05-14-18 at 12:31 PM.
05-14-18, 11:15 PM
#6
I've also considered 10w30 as it's more shear stable as the oil ages.
But considering I do longer OCI's that can go into the winter months with near freezing temps, I might as well stick with 5w30
But considering I do longer OCI's that can go into the winter months with near freezing temps, I might as well stick with 5w30
05-15-18, 08:52 AM
#7
Personally, I would go the other way and get a 0w20 which flows the fastest thru the engine and would stop any racketing faster.
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05-15-18, 06:30 PM
#8
I just switched to 0w20. My first oil change since purchase In March. I didn’t really notice a difference but what I did notice it was very thin. Makes me want to back to a thicker oil.
05-16-18, 03:13 AM
#9
For example, the BMW M series suggests a 10w60 oil. Something that can handle the stresses of the mechanical demands of the engine design vs. a Prius/Corolla which suggests a 0w20 for it's engine design.
To me the answer is simple. The engine in the IS350 is designed as more "performance" based, so why bother with a thin oil?
05-16-18, 10:24 AM
#10
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How big of a difference in flow is it compared to 5w30 in 50-60 degree weather? I guess it’s a trade off then as you are sacrificing either better protection or how quickly it reaches the engines compartments. Which would be better for my situation?
05-16-18, 10:28 AM
#11
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05-22-18, 08:32 AM
#13
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Just did a bit of thread digging and it looks like other members have had success eliminating cold ticking by switching to castrol and the general consensus is that it is a higher quality brand than mobile 1 which I am currently using. I will change my oil with castrol and see if that helps the problem because this cold lifter noise or whatever it is REALLY is bothering me. Is anyone else experiencing this problem btw?