When using a dipstick to check engine oil or automatic transmission fluid, how should you hold the dipstick to read the level accurately?

Prepare for the Automotive Service Technician Period 1 exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Holding the dipstick horizontally allows the liquid to settle evenly along the length of the stick, giving a true reading between the marked levels. If you hold it vertically or at an angle, gravity pulls the fluid to one end and distorts the result, making it seem higher or lower than it actually is. So keep the dipstick flat, wipe it, reinsert fully, then read the level at eye level against the marks.