Heat exchanger dimple configuration

An oil cooler configured to be coupled to a vehicle, the oil cooler comprising:

• a flange plate including fastener apertures and fluid flow apertures, the fastener apertures each configured to receive a fastener to couple the flange plate to the vehicle, the fluid flow apertures configured to permit oil and coolant to flow through the flange plate;
• a base heat exchanger plate having a first surface coupled to the flange plate and a second surface spaced away from the flange plate, the base heat exchanger plate including fluid flow apertures extending therethrough to permit oil and coolant to flow through the base heat exchanger plate;
• a first heat exchanger plate coupled to the base heat exchanger plate, the first heat exchanger plate having a first perimeter portion and a first central portion, the first perimeter portion surrounding the first central portion and including a first upwardly extending flange, the first central portion including a first substantially planar surface a first plurality of upstanding impressions and extending upwardly from the first substantially planar surface away from the base heat exchanger plate, and a second plurality of upstanding impressions extending upwardly from the first substantially planar surface away from the base heat exchanger plate, a first upper distal portion of the first plurality of upstanding impressions spaced a first distance from the first substantially planar surface, the first upper distal portion extending along a first length, a second upper distal portion of the second plurality of upstanding impressions spaced the first distance from the first substantially planar surface, the second upper distal portion extending along the first length;
• a second heat exchanger plate coupled to the first heat exchanger plate, the second heat exchanger plate having a second perimeter portion and a second central portion, the second perimeter portion surrounding the second central portion and including a second upwardly extending flange, the second upwardly extending flange configured to contact an inner surface of the first upwardly extending flange to thereby couple the second heat exchanger plate to the first heat exchanger plate, the second central portion including a second substantially planar surface, a first plurality of descending impressions extending downwardly from the second substantially planar surface toward the base heat exchanger plate, a first lower distal portion of each of the first plurality of descending impressions spaced a second distance from the second substantially planar surface, the second substantially planar surface spaced from the first substantially planar surface a third distance while the second heat exchanger plate is coupled to the first heat exchanger plate, the first lower distal portion extending along a second length, and a second plurality of descending impressions extending downwardly from the second substantially planar surface toward the base heat exchanger plate, a second lower distal portion of each of the second plurality of descending impressions spaced the second distance from the second substantially planar surface, the second lower distal portion extending along the second length;
• and
• a turbulator positioned on an upper surface of the second heat exchanger plate,
• wherein the first distance is less than the third distance and the second distance is less than the third distance,
• wherein a third length of the first upper distal portion of one of the first plurality of upstanding impressions is configured to abut a fourth length of the first lower distal portion of a corresponding one of the first plurality of descending impressions, and
• wherein the third length is less than the first length and the fourth length is less than the second length,
• wherein the first plurality of upstanding impressions are oriented at a non-parallel angle with respect to the second plurality of upstanding impressions, and
• wherein the angle between the first plurality of upstanding impressions and the second plurality of upstanding impressions is within the range of 60 to 120 degrees.