Oil viscosity in warm climate - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Sharpilot · 08-28-2018, 11:28 AM

Good afternoon,

Just wanted to get your opinion on something. I live in the Caribbean so the temperature doesn't go lower than 70F. Would it be fine to use a higher viscosity oil like 5W-30 since I don't have to worry about cold temps?

8RZ · 08-28-2018, 11:49 AM

You'll be fine with 5w30 but I'm from Florida and have had zero issues with running the recommended 0w30 in this climate.

86MLR · 08-28-2018, 06:31 PM

Sydney Australia, 5w 30

Lowest temps I see are -2° C in winter during the night, highest is 45° C during the day in summer.

Average temps from 5° C to 30° C.

Yoshoobaroo · 08-28-2018, 09:21 PM

Florida too here, I just switched to 0W-30:

https://smile.amazon.com/Castrol-062.../dp/B007G7PUMS

Quote:

Originally Posted by 8RZ

You'll be fine with 5w30 but I'm from Florida and have had zero issues with running the recommended 0w30 in this climate.

8RZ · 08-29-2018, 10:16 AM

Quote:

Originally Posted by Yoshoobaroo

Totally off topic, is your signature picture at the old geneva SSCA autocross spot?

No, this was in Brooksville.

solidONE · 08-29-2018, 07:58 PM

Quote:

Originally Posted by Sharpilot

Good afternoon,

Just wanted to get your opinion on something. I live in the Caribbean so the temperature doesn't go lower than 70F. Would it be fine to use a higher viscosity oil like 5W-30 since I don't have to worry about cold temps?

Thats what I do every spring/summer till fall, then back to 0w-20 for the winter months.

I believe that's what the manual recommends as well for hotter or more heavy duty use for this engine.

JIM THEO · 08-29-2018, 08:37 PM

I use 5W30 Redline (Viscosity is only one index, HTHS plays also a huge role) in Greece, from -5 to 40+C, but bear in mind STI sells 5W40 even for spirited street driving and Motul 5W40 for track use if that matters!

chipmunk · 09-13-2018, 08:42 AM

Honest question:
As long as your thermostat is working, and the radiator fans kick in properly, what difference does this make if the ambient never drops to sub-zero?

08-28-2018, 11:28 AM	#1
Sharpilot Junior Member Join Date: Aug 2018 Drives: 2013 Scion FRS Location: Curacao Posts: 6 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Oil viscosity in warm climate Good afternoon, Just wanted to get your opinion on something. I live in the Caribbean so the temperature doesn't go lower than 70F. Would it be fine to use a higher viscosity oil like 5W-30 since I don't have to worry about cold temps?

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08-28-2018, 06:31 PM	#3
86MLR Senior Member Join Date: Aug 2018 Drives: 2002 VX Commodore SS LS1 Auto Location: Sydney Posts: 2,203 Thanks: 500 Thanked 2,185 Times in 1,111 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	Sydney Australia, 5w 30 Lowest temps I see are -2° C in winter during the night, highest is 45° C during the day in summer. Average temps from 5° C to 30° C.

08-29-2018, 08:37 PM	#7
JIM THEO Senior Member Join Date: Feb 2018 Drives: BRZ 2018 Location: Greece Posts: 498 Thanks: 119 Thanked 142 Times in 99 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	I use 5W30 Redline (Viscosity is only one index, HTHS plays also a huge role) in Greece, from -5 to 40+C, but bear in mind STI sells 5W40 even for spirited street driving and Motul 5W40 for track use if that matters!

09-13-2018, 08:42 AM	#8
chipmunk Senior Member Join Date: Mar 2017 Drives: _ Location: _ Posts: 440 Thanks: 50 Thanked 178 Times in 104 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Honest question: As long as your thermostat is working, and the radiator fans kick in properly, what difference does this make if the ambient never drops to sub-zero?

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