GAIL looks bearish if it is unable to cross 87.55 level as it forms a triangle pattern in higher time frame.
Also,increase in price is not being confirmed by higher volumes.The volume is on decline and RSI suggests that the stock is overbought.One can look for shorting the stock with a minor stop loss. Target 86.10 / 85.50. If it crosses 87.55 levels there could be a breakout and stock can give bullish momentum.