According to my 90' Honda CRX shop manual Honda recommends 10w30 - If you live in an area where the temperature doesn't drop below 0 Fahrenheit you can use 10w40 or 20w40.
Hey, the 1990 manual page is a cool thing to put in here. I'd say if you have a 1990 car you want to put the 10w-30, or 10w40..Go for it.
I know fer sure my 2004 Honda Owners Manual says use the Honda MTF, but if yer in a pinch, use motor oil, But, Replace the Motor Oil with the Honda Stuff ASAP.
I have been in other Honda specific forums where guys who are veteran mechanics are adamant about using only the Honda MTF oil, it is the only thing I'd ever put in my 04.
I read somewhere that the motor oil that Honda recommended in 1990 had additives that are no longer in the oil. Basically that means that the old recommendations are no longer valid. Your best bet is the fluid Honda provides for their new manual transmission cars. I can't remember where I read this information since it was two years ago when I sold my VX, but I changed the transmission fluid and used the Honda fluid. It doesn't take much and one of the weaknesses is the input shaft bearings in the Honda transmissions. If you don't have any problems with your transmission then personally I would use the fluid Honda currently recommends.
I learned this lesson the hard way a long time ago when I changed the fluid in a BMW 2002, only to find out later that BMW used mineral oil in their transmissions at the time. Had to replace all the synchros in the transmission, a $600 mistake in 1975, I'll never forget.
I went ahead and bought 10w30 Synth oil from Amsoil to put in the manual tranny. Anyone see an issue with using this oil? It's what Amsoil recommends for my 90 CRX.
I went ahead and bought 10w30 Synth oil from Amsoil to put in the manual tranny. Anyone see an issue with using this oil? It's what Amsoil recommends for my 90 CRX.
I think that's a very wise decision. Amsoil makes a great product. I'm curious about and leaning towards this in my 90 CRX HF:
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Just my opinion, but I think Amsoil is over-priced for what you're getting. I'm not going to go so far as to say oil is oil is oil, but the top rated manufacturers are all a safe bet. It just so happens that Amsoil is twice as expensive, and they justify it by saying that their oil will last 5-10x longer.
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