Mobil1 5W30 or 10W30 for 2002 Toyota Tacoma V6?

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Oct 14, 2003
Eldora, Colorado 9000'
Hello, Toyota specs 5W30 for the engine and I've been running 5W30 since it was new. The oil changes are below. I live in Tucson, AZ and the lowest temp it gets outside is 30 degrees. And well over 100 degrees in the summer. Could I run Mobil 1 10W30 and be fine? Will it really make a difference between 5W30, or not? Thanks in advance. 600 miles Toyota OEM oil and filter 3K miles Toyota OEM oil and filter 6K miles Mobil 1 SS and filter 10K miles Mobil 1 SS and filter
You could run 10W-30, but I doubt you'll see much difference, if any. You could easily extend your drain intervals with either oil too. I've been running my 3.4L 7K-10K with good results. There are quite a few used oil anaylsis results for this engine in that section. Look them over... [ December 11, 2003, 01:50 PM: Message edited by: jsharp ]
Originally posted by John in the ATL: M1 10w-30 is the most shear stable of the Mobil 30 weights. The best choice for the desert.
His best choice (if sticking with M1) might be to add a quart of 15w50 to that mixture, at least during the hot summer.
Since you have the 6 I would opt for the 10-30. I mix about 200 ml of 15-50 M1 in the 4-Runner which holds 4.8 - 5 quarts. My Taco just gets the 5-30. Daily Drives: -2003 Toyota Tacoma PreRunner XtraCab, Impulse Red, Peppy 2.7 Liter 4 Banger, Running Mobil1 Synthetics SS 5W-30. ODO 6400 Miles. -1995 Toyota 4-Runner, Evergreen, 3.0 V6, Running Mobil1 Synthetic SS 10W-30. ODO 82200 Miles. (Switching to GC next)Nope sticking with M1.
I've been running 5w-30 Amsoil for the past year in my 01 Tacoma 3.4 for the last year here in Las Vegas. I am switching to 10w-30 Mobil 1 this weekend.....
10w-30. There is no need to try to thicken the oil for the Toyota 3.4 V6. [Cheers!] [Patriot]
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