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pym19109 · 05-30-2021, 10:27 AM

Hi guys.

I just want to know your opinion about API spec for our MT fluid as i searched a lot about it and found that many people said use GL-4 spec but when I go for owner manual. It said GL-3 or upper grade or even in the 2018 manual which i found in online also spec for API GL-3, 4 and 5. Does GL-5 really safe for the synchromesh?

05-30-2021, 10:27 AM	#1
pym19109 WRBLUE BRZ Join Date: Apr 2016 Drives: 2016 Subaru BRZ Location: TH Posts: 61 Thanks: 67 Thanked 8 Times in 6 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	MT trans fluid spec Hi guys. I just want to know your opinion about API spec for our MT fluid as i searched a lot about it and found that many people said use GL-4 spec but when I go for owner manual. It said GL-3 or upper grade or even in the 2018 manual which i found in online also spec for API GL-3, 4 and 5. Does GL-5 really safe for the synchromesh?