The only risk that i would think would be some leak through on an old wheel bearing seal or cracked dust boot on a brake caliper or lower ball joint with them fully submerged. There should not have been any signifiacant splash up into the engine compartment with the splash pans all intact.

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FRED

Daily Driver: 98 E300TD 199K
Hobby Car: 69 Austin Mini
Past Diesels: 84 300SD, 312K
87 300SDL, 251K
94 Chev. K-1500 6.5Ltr.TD, 373K