Bike is 08 YZ450. My radiator level usually stays just above the core. But, the weather is starting to warm up over here and I find the level going just under the core now after every ride. Im using the standard 50/50 anti freeze mix. I want to try a 1.3 bar pressure cap and see how things go. My question is, is this fairly safe to use and wont harm the engine with the added pressure?