Hi guys im starting to get a little bit of gear engagement lock out when going into 3rd gear, its 6 speed with 60,000km on it, stock clutch i believe with only very minimal whirr noise from the throwout bearing when disengaged.
So i switched gearbox fluid to full synthetic at 55,000 when i got the car after what was possibly the factory oil fill & since have started to have a small 3rd gear lock out issue when shifting into it, I tried the redline MT-90 & then a mix with 50:50 MT90/MTL & now trying a slightly thinner full syn Penzoil 75w-85 but i keep getting the lock out. It does shift the best out the 3 options.
I believe all was normal till i switched the oil. Using 1.8 Quart as per manual suggests.
As you try to shift into 3rd it sometimes resists for a sec or two but does eventually shift without crunching. It feels as though the clutch is in need of some adjustment or the new synthetic oil is too slippery for the syncros. Mostly when the gearbox is cold to warm it will have this issue. Once hot its better.. still can do it occasionally perhaps 1/4 of the time.
I have given the clutch a bleed with new DOT4 castrol performance fluid just at the nipple by the oil filter but i perhaps need to adjust the rod on the back of the pedal to see if increasing the travel/ rod length a small bit will help, or try bleeding it again.. OR try just a factory fill oil again from Mazda. I have also checked the pedal box to see if i can see any signs of the cracking/bending mount but all looks normal still.
No other problems with gears just 2nd when starting off in the morning for a shift or two but gears are smooth otherwise.
Would be nice to have it shifting positively again without hesitation!!!! as its starting to get frustrating on the amazing rx8 driving experience!
So i switched gearbox fluid to full synthetic at 55,000 when i got the car after what was possibly the factory oil fill & since have started to have a small 3rd gear lock out issue when shifting into it, I tried the redline MT-90 & then a mix with 50:50 MT90/MTL & now trying a slightly thinner full syn Penzoil 75w-85 but i keep getting the lock out. It does shift the best out the 3 options.
I believe all was normal till i switched the oil. Using 1.8 Quart as per manual suggests.
As you try to shift into 3rd it sometimes resists for a sec or two but does eventually shift without crunching. It feels as though the clutch is in need of some adjustment or the new synthetic oil is too slippery for the syncros. Mostly when the gearbox is cold to warm it will have this issue. Once hot its better.. still can do it occasionally perhaps 1/4 of the time.
I have given the clutch a bleed with new DOT4 castrol performance fluid just at the nipple by the oil filter but i perhaps need to adjust the rod on the back of the pedal to see if increasing the travel/ rod length a small bit will help, or try bleeding it again.. OR try just a factory fill oil again from Mazda. I have also checked the pedal box to see if i can see any signs of the cracking/bending mount but all looks normal still.
No other problems with gears just 2nd when starting off in the morning for a shift or two but gears are smooth otherwise.
Would be nice to have it shifting positively again without hesitation!!!! as its starting to get frustrating on the amazing rx8 driving experience!
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