First up, what a great site!!

Now here we go (takes a breath)....

I have a 1995 YZF750R with K&N,Dyno'd and fitted with front R1 Calipers.

Engine had a full rebuild, well cleaned...I was bored and stripped down full engine, clean every part and put back together.

I have owned the bike for a few months but what I have noticed is that.

It uses a lot of oil is this normal, as I stay in Glasgow and went to Blackpool for the weekend, oil was ok when I left home on the way back the red light came on needing oil..I made it to the last services on the M6 for a top up. Had to put in the Castrol 4T Pro to get it started, synthetic crap ( I use the Valvoline 4T 10w-40). I tried 1 bottle first but it was blowing black smoke and engine cut out, then I added another bottle and it started. I feel 2 bottles was a lot of oil, as I was on my own I was trying to judge the oil I was putting in.

When I got home I got my mate to sit on the bike so that I could check the level, its right at the top of the level glass, so may need to drain a bit out to get to the marker.

So is this normal for this oil consumption? and whats the best oil for this bike to use.

Also is there anyone who knows where I could get a rear tail light Clear Led for this bike.

Thanks!

Castrol 4T Pro Synthetic is not crap - it's a high quality oil and spot on for your engine. It is now called Castrol Power 1 Racing 4T. Valvoline motorcycle oil is mineral oil with synthetic additives - it is crap and nowhere near as good as the Castrol synthetic stuff.

All 5 valve Yamahas use quite a lot of oil. Not saying your consumption is normal, because you don't really know how much it used over what mileage, but they do use oil.

Do you really mean you stripped the engine completely to clean it? Maybe that's why it's using oil?

So you say Castrol would be better suited for my bike.

I had previously owned a CBR600 1994 F2 Supersport and used the same oil I use for this bike but I tried the Castrol oil in that bike and it made the engine more noiser and sluggish than usual.

Yes I say that.

I don't see that an oil will make your bike sluggish, unless it's a straight 50 which will be too thick for the motor to turn over.