I wanted to do the cheapest possible oil change as the previous oil looked neglected on my new purchase 94 ls400. I put on a st36104 (I think that's the number) on it. It's a supertech basic oil filter. I've been worrying about recently and am worrying so much I'm wanting to change it asap to a toyota oem denso. Are my worries illogical? I plan to run a 2k-3k oci on it... please reassure or tell me what's up. Thanks